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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Scientific Calculator
Just a heads up. If you want a calculator in your tool box, it would
be hard to beat the price of one from Dollar Tree. Ten digits, 56 functions for a buck. I bought one for my grandson. Dan |
#2
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Scientific Calculator
On Wed, 20 Oct 2010 12:16:23 -0700 (PDT), "
wrote: Just a heads up. If you want a calculator in your tool box, it would be hard to beat the price of one from Dollar Tree. Ten digits, 56 functions for a buck. I bought one for my grandson. Dan In 1972, I got a 90 on a test instead of a 100 because I wasted time with my slip stick. So, I went out and spent $200 on an SR-10, four function plus reciprocal. I remember I had just got a raise from 1.60 all the way to 2.30 so it only took two weeks pay. Karl |
#3
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Scientific Calculator
On Oct 20, 3:36*pm, Karl Townsend
wrote: On Wed, 20 Oct 2010 12:16:23 -0700 (PDT), " wrote: Just a heads up. *If you want a calculator in your tool box, it would be hard to beat the price of one from Dollar Tree. *Ten digits, 56 functions for a buck. *I bought one for my grandson. Dan In 1972, I got a 90 on a test instead of a 100 because I wasted time with my slip stick. So, I went out and spent $200 on an SR-10, four function plus reciprocal. I remember I had just got a raise from 1.60 all the way to 2.30 so it only took two weeks pay. Karl You are not the only one, Karl. Sometime, about 1975,76, or so, I was programming for the bank processing division of a computer service bureau. One day the manager of the other half of the company, the non-bank division, asked if I could look at a program one of the programmers was having trouble with. Sure, should take just a little while! Right. The program had to compute something based on the prime interest rate. If you remember those years, the prime rate began to change twice a month, then weekly, and for a short time, twice a week. The programmer was way over his head, and so was I. I worked on the problem for over a week, using pencil and paper to do the computations, until I finally figured out how to handle all the rate changes properly. Can you believe in the very following week I got an ad from HP for their new HP-55 programmable calculator? If I had had that thing, I could have solved the programming problem in just a couple of days. The price was $499.99 for the complete set up, so I ordered it. I never had reason to use it again. I did program a bunch of trivial stuff, but nothing special. I sold it 10 years ago to a collector. Paul |
#4
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Scientific Calculator
On Wed, 20 Oct 2010 16:45:13 -0700 (PDT), "
wrote: On Oct 20, 3:36*pm, Karl Townsend wrote: On Wed, 20 Oct 2010 12:16:23 -0700 (PDT), " wrote: Just a heads up. *If you want a calculator in your tool box, it would be hard to beat the price of one from Dollar Tree. *Ten digits, 56 functions for a buck. *I bought one for my grandson. Dan In 1972, I got a 90 on a test instead of a 100 because I wasted time with my slip stick. So, I went out and spent $200 on an SR-10, four function plus reciprocal. I remember I had just got a raise from 1.60 all the way to 2.30 so it only took two weeks pay. Karl You are not the only one, Karl. Sometime, about 1975,76, or so, I was programming for the bank processing division of a computer service bureau. One day the manager of the other half of the company, the non-bank division, asked if I could look at a program one of the programmers was having trouble with. Sure, should take just a little while! Right. The program had to compute something based on the prime interest rate. If you remember those years, the prime rate began to change twice a month, then weekly, and for a short time, twice a week. The programmer was way over his head, and so was I. I worked on the problem for over a week, using pencil and paper to do the computations, until I finally figured out how to handle all the rate changes properly. Can you believe in the very following week I got an ad from HP for their new HP-55 programmable calculator? If I had had that thing, I could have solved the programming problem in just a couple of days. The price was $499.99 for the complete set up, so I ordered it. I never had reason to use it again. I did program a bunch of trivial stuff, but nothing special. I sold it 10 years ago to a collector. Paul About that time, one of the engineers in regional office somehow managed to get a purchase order issued for one of those. When management discovered what had been purchased, it was decreed that it should be locked in the safe when not in use. In 1977, I got a chance to use it for a couple days and could see that it would be useful my work but it would never be possible for me to take it home and play around with it. I bought a Commodore PR100 with 100 program steps, then, when the TI-59 came out, I got me one. Over the next five years, I used that calculator regularly, then, I got stuck in regional office away from the field and rarely used it and when I did need it, the card reader had packed it in. now I have two of them downstairs complete with printers, and wouldn't have a clue what to do with them.. Gerry :-)} London, Canada |
#5
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Scientific Calculator
On Oct 20, 10:55*pm, Gerald Miller wrote:
On Wed, 20 Oct 2010 16:45:13 -0700 (PDT), " wrote: On Oct 20, 3:36 pm, Karl Townsend wrote: On Wed, 20 Oct 2010 12:16:23 -0700 (PDT), " wrote: Just a heads up. If you want a calculator in your tool box, it would be hard to beat the price of one from Dollar Tree. Ten digits, 56 functions for a buck. I bought one for my grandson. Dan In 1972, I got a 90 on a test instead of a 100 because I wasted time with my slip stick. So, I went out and spent $200 on an SR-10, four function plus reciprocal. I remember I had just got a raise from 1.60 all the way to 2.30 so it only took two weeks pay. Karl You are not the only one, Karl. Sometime, about 1975,76, or so, I was programming for the bank processing division of a computer service bureau. One day the manager of the other half of the company, the non-bank division, asked if I could look at a program one of the programmers was having trouble with. Sure, should take just a little while! Right. The program had to compute something based on the prime interest rate. If you remember those years, the prime rate began to change twice a month, then weekly, and for a short time, twice a week. The programmer was way over his head, and so was I. I worked on the problem for over a week, using pencil and paper to do the computations, until I finally figured out how to handle all the rate changes properly. Can you believe in the very following week I got an ad from HP for their new HP-55 programmable calculator? If I had had that thing, I could have solved the programming problem in just a couple of days. The price was $499.99 for the complete set up, so I ordered it. I never had reason to use it again. I did program a bunch of trivial stuff, but nothing special. I sold it 10 years ago to a collector. Paul About that time, one of the engineers in regional office somehow managed to get a purchase order issued for one of those. When management discovered what had been purchased, it was decreed that it should be locked in the safe when not in use. In 1977, I got a chance to use it for a couple days and could see that it would be useful my work but it would never be possible for me to take it home and play around with it. I bought a Commodore PR100 with 100 program steps, then, when the TI-59 came out, I got me one. Over the next five years, I used that calculator regularly, then, I got stuck in regional office away from the field and rarely used it and when I did need it, the card reader had packed it in. now I have two of them downstairs complete with printers, and wouldn't have a clue what to do with them.. Gerry :-)} London, Canada I was a "starving student" in the early '70's, and when I bought my texts for the '72 fall semester and had a look in the heat transfer text, I knew that my slip stick would no longer suffice what with all those fractional indicies calculations. Went and bought a Digimatic D8 scientific calculator at Sears for $Cdn182. 2 years later when doing extensive statistical calcs (standard deviation calcs are a killer on non-stats machines) the key pad crapped out and Sears replaced it for free. The boss loaned me an HP45 calc and it was the cat's meow for the work at hand; but no way could I justify the $500 or so it cost! One term tuition was around $600 at that time. I still have the D8 calc and it works fine. Wolfgang |
#6
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Scientific Calculator
On 2010-10-21, Gerald Miller wrote:
On Wed, 20 Oct 2010 16:45:13 -0700 (PDT), " wrote: [ ... ] Sometime, about 1975,76, or so, I was programming for the bank processing division of a computer service bureau. One day the manager of the other half of the company, the non-bank division, asked if I could look at a program one of the programmers was having trouble with. Sure, should take just a little while! Right. [ ... ] Can you believe in the very following week I got an ad from HP for their new HP-55 programmable calculator? If I had had that thing, I could have solved the programming problem in just a couple of days. The price was $499.99 for the complete set up, so I ordered it. I never had reason to use it again. I did program a bunch of trivial stuff, but nothing special. I sold it 10 years ago to a collector. Paul About that time, one of the engineers in regional office somehow managed to get a purchase order issued for one of those. When management discovered what had been purchased, it was decreed that it should be locked in the safe when not in use. In 1977, I got a chance to use it for a couple days and could see that it would be useful my work but it would never be possible for me to take it home and play around with it. Where I worked -- about the same time or a bit earlier, the head honcho of the lab branch where I was got an HP 45 and kept it locked up, letting nobody use it. He claimed that there was no need for any of his people to need one. About that time they were just below $400.00 -- and I decided to buy one of my own -- with my *own* money. I kept it on my belt, and took great pleasure in hauling it out in meetings where he was present and answering questions requiring calculation -- quite quickly -- to show how useful it was. I bought a Commodore PR100 with 100 program steps, then, when the TI-59 came out, I got me one. Over the next five years, I used that calculator regularly, then, I got stuck in regional office away from the field and rarely used it and when I did need it, the card reader had packed it in. now I have two of them downstairs complete with printers, and wouldn't have a clue what to do with them.. While I keep an HP-15C and an HP-16C (the computer math one) in a belt pouch to this day. Some of these days, they will die and I will not be able to get a replacement. (Apparently, HP has been convinced to continue the HP-10C (business math), but not the scientific or computer ones. Enjoy, DoN. -- Remove oil spill source from e-mail Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#7
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Scientific Calculator
While I keep an HP-15C and an HP-16C (the computer math one) in a belt pouch to this day. Some of these days, they will die and I will not be able to get a replacement. (Apparently, HP has been convinced to continue the HP-10C (business math), but not the scientific or computer ones. Enjoy, DoN. Pretty much any HP calculator ever produced is available on eBay... just mention my name and pay cash. Erik |
#8
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Scientific Calculator
DoN. Nichols wrote:
On 2010-10-21, Gerald Miller wrote: On Wed, 20 Oct 2010 16:45:13 -0700 (PDT), " wrote: [ ... ] Sometime, about 1975,76, or so, I was programming for the bank processing division of a computer service bureau. One day the manager of the other half of the company, the non-bank division, asked if I could look at a program one of the programmers was having trouble with. Sure, should take just a little while! Right. [ ... ] Can you believe in the very following week I got an ad from HP for their new HP-55 programmable calculator? If I had had that thing, I could have solved the programming problem in just a couple of days. The price was $499.99 for the complete set up, so I ordered it. I never had reason to use it again. I did program a bunch of trivial stuff, but nothing special. I sold it 10 years ago to a collector. Paul About that time, one of the engineers in regional office somehow managed to get a purchase order issued for one of those. When management discovered what had been purchased, it was decreed that it should be locked in the safe when not in use. In 1977, I got a chance to use it for a couple days and could see that it would be useful my work but it would never be possible for me to take it home and play around with it. Where I worked -- about the same time or a bit earlier, the head honcho of the lab branch where I was got an HP 45 and kept it locked up, letting nobody use it. He claimed that there was no need for any of his people to need one. About that time they were just below $400.00 -- and I decided to buy one of my own -- with my *own* money. I kept it on my belt, and took great pleasure in hauling it out in meetings where he was present and answering questions requiring calculation -- quite quickly -- to show how useful it was. I bought a Commodore PR100 with 100 program steps, then, when the TI-59 came out, I got me one. Over the next five years, I used that calculator regularly, then, I got stuck in regional office away from the field and rarely used it and when I did need it, the card reader had packed it in. now I have two of them downstairs complete with printers, and wouldn't have a clue what to do with them.. While I keep an HP-15C and an HP-16C (the computer math one) in a belt pouch to this day. Some of these days, they will die and I will not be able to get a replacement. (Apparently, HP has been convinced to continue the HP-10C (business math), but not the scientific or computer ones. Enjoy, DoN. How long do you think they'll last?. I bought my first HP-11C in 1982 and it's still going. I though it was an expensive purchase at the time when all around me were buying cheap Casios, usually the ones with the extra functions on the flip open cover, but then the cover functions would start to fail within a year IIRC due to flexing I suspect. I started using HPs with my dad's old HP45 when he upgraded to a HP41C so I'll probably be using RPN by choice till I have no other option. |
#9
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Scientific Calculator
On Oct 21, 8:21*pm, "DoN. Nichols" wrote:
On 2010-10-21, Gerald Miller wrote: On Wed, 20 Oct 2010 16:45:13 -0700 (PDT), " wrote: * * * * [ ... ] Sometime, about 1975,76, or so, I was programming for the bank processing division of a computer service bureau. One day the manager of the other half of the company, the non-bank division, asked if I could look at a program one of the programmers was having trouble with. Sure, should take just a little while! Right. * * * * [ ... ] Can you believe in the very following week I got an ad from HP for their new HP-55 programmable calculator? If I had had that thing, I could have solved the programming problem in just a couple of days. The price was $499.99 for the complete set up, so I ordered it. I never had reason to use it again. I did program a bunch of trivial stuff, but nothing special. I sold it 10 years ago to a collector. Paul About that time, one of the engineers in regional office somehow managed to get a purchase order issued for one of those. When management discovered what had been purchased, it was decreed that it should be locked in the safe when not in use. In 1977, I got a chance to use it for a couple days and could see that it would be useful my work but it would never be possible for me to take it home and play around with it. * * * * Where I worked -- about the same time or a bit earlier, the head honcho of the lab branch where I was got an HP 45 and kept it locked up, letting nobody use it. *He claimed that there was no need for any of his people to need one. * * * * About that time they were just below $400.00 -- and I decided to buy one of my own -- with my *own* money. * * * * I kept it on my belt, and took great pleasure in hauling it out in meetings where he was present and answering questions requiring calculation -- quite quickly -- to show how useful it was. * * * * * * * * I bought a Commodore PR100 with 100 program steps, then, when the TI-59 came out, I got me one. Over the next five years, I used that calculator regularly, then, I got stuck in regional office away from the field and rarely used it and when I did need it, the card reader had packed it in. now I have two of them downstairs complete with printers, and wouldn't have a clue what to do with them.. * * * * While I keep an HP-15C and an HP-16C (the computer math one) in a belt pouch to this day. *Some of these days, they will die and I will not be able to get a replacement. *(Apparently, HP has been convinced to continue the HP-10C (business math), but not the scientific or computer ones. * * * * Enjoy, * * * * * * * * DoN. -- * * * * * * * * * Remove oil spill source from e-mail *Email: * | Voice (all times): (703) 938-4564 * * * * * (too) near Washington D.C. |http://www.d-and-d.com/dnichols/DoN.html * * * * * *--- Black Holes are where God is dividing by zero ---- Hide quoted text - - Show quoted text - We actualy have two HP-15Cs Shortly after I graduated I met the girl who was to become my wife. She was in engineering school and needed a calculator. I will bet the diffrence between the HP-10C (buissnes model) and the 15 C guts is a jumper setting. |
#10
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Scientific Calculator
On Oct 21, 9:21*pm, "DoN. Nichols" wrote:
On 2010-10-21, Gerald Miller wrote: On Wed, 20 Oct 2010 16:45:13 -0700 (PDT), " wrote: * * * * [ ... ] Sometime, about 1975,76, or so, I was programming for the bank processing division of a computer service bureau. One day the manager of the other half of the company, the non-bank division, asked if I could look at a program one of the programmers was having trouble with. Sure, should take just a little while! Right. * * * * [ ... ] Can you believe in the very following week I got an ad from HP for their new HP-55 programmable calculator? If I had had that thing, I could have solved the programming problem in just a couple of days. The price was $499.99 for the complete set up, so I ordered it. I never had reason to use it again. I did program a bunch of trivial stuff, but nothing special. I sold it 10 years ago to a collector. Paul About that time, one of the engineers in regional office somehow managed to get a purchase order issued for one of those. When management discovered what had been purchased, it was decreed that it should be locked in the safe when not in use. In 1977, I got a chance to use it for a couple days and could see that it would be useful my work but it would never be possible for me to take it home and play around with it. * * * * Where I worked -- about the same time or a bit earlier, the head honcho of the lab branch where I was got an HP 45 and kept it locked up, letting nobody use it. *He claimed that there was no need for any of his people to need one. * * * * About that time they were just below $400.00 -- and I decided to buy one of my own -- with my *own* money. * * * * I kept it on my belt, and took great pleasure in hauling it out in meetings where he was present and answering questions requiring calculation -- quite quickly -- to show how useful it was. * * * * * * * * I bought a Commodore PR100 with 100 program steps, then, when the TI-59 came out, I got me one. Over the next five years, I used that calculator regularly, then, I got stuck in regional office away from the field and rarely used it and when I did need it, the card reader had packed it in. now I have two of them downstairs complete with printers, and wouldn't have a clue what to do with them.. * * * * While I keep an HP-15C and an HP-16C (the computer math one) in a belt pouch to this day. *Some of these days, they will die and I will not be able to get a replacement. *(Apparently, HP has been convinced to continue the HP-10C (business math), but not the scientific or computer ones. * * * * Enjoy, * * * * * * * * DoN. I have both, also. The 15C was going to get scrapped at work, the 16C I forked out Big Bucks for back in '82 when it first came out. I was working with a 36-bit mainframe, so the TI "programmers" calculator didn't cut it. Needed up to 72 bits for double register ops and converting EBCDIC to EBCD characters. Not a whole lot of messing with paper dumps and machine language going on now, so there's probably not a lot of call for a 16C on the market. Except for programability, I've also got a $6 Sharp that does just about everything that the 15C does except it doesn't use RPN. The rechargeable batteries seem to be the weak spot on those old calculators, those HP "business-card" sized ones use button cells so will probably keep chugging along as long as the battery compartment doesn't get leakers. Stan |
#11
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Scientific Calculator
And we bought a 4 banger with reciprocal and memory for (plug in wall)
for ... $600. It was pre any TI or HP calcs. I did logs on it and trig. I was a Senior Adjunct Professor teaching 3 classes as a second job. Calc crunching the numbers saved days of hand work. We had some great apps - paper - methods - in EDN or Electronics back then. By the middle 70's I was fully computerized doing histograms. :-) Martin On 10/20/2010 5:36 PM, Karl Townsend wrote: On Wed, 20 Oct 2010 12:16:23 -0700 (PDT), " wrote: Just a heads up. If you want a calculator in your tool box, it would be hard to beat the price of one from Dollar Tree. Ten digits, 56 functions for a buck. I bought one for my grandson. Dan In 1972, I got a 90 on a test instead of a 100 because I wasted time with my slip stick. So, I went out and spent $200 on an SR-10, four function plus reciprocal. I remember I had just got a raise from 1.60 all the way to 2.30 so it only took two weeks pay. Karl |
#12
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Scientific Calculator
I was a senior in high school in 1975... I'd had my good K&E bamboo
slide rule for about a couple of months when the first great price crash for calculators hit. Suddenly a Melcor SC-535 (see http://www.thimet.de/calccollection/...5/Contents.htm) was available for under $100. That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. -- As we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously. (Benjamin Franklin) |
#13
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Scientific Calculator
On Oct 21, 11:39*am, Joe Pfeiffer wrote:
I was a senior in high school in 1975... *I'd had my good K&E bamboo slide rule for about a couple of months when the first great price crash for calculators hit. *Suddenly a Melcor SC-535 (seehttp://www.thimet.de/calccollection/calculators/Melcor-SC-535/Content...) was available for under $100. *That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. -- As we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously. (Benjamin Franklin) 1982 my parents bought a HP 15C caculator for me as a bithday present. Prof said my old calc wasn't up for my EE classes. It would do matrices, complex number atrithmatic and had a iterive equation solver. Saved me a bunch of time. Three sets of batteris later I used it today. Havent used anything more complex than Y^X in 20 years. Now I use Mathmatic for almost everything besides numerical simulation where MATLAB rules. |
#14
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Scientific Calculator
Ah - an Emacs user.
I love the vertical column cut - e.g. the 4th column of numbers cut and put in the second as an insert. Martin On 10/21/2010 1:39 PM, Joe Pfeiffer wrote: I was a senior in high school in 1975... I'd had my good K&E bamboo slide rule for about a couple of months when the first great price crash for calculators hit. Suddenly a Melcor SC-535 (see http://www.thimet.de/calccollection/...5/Contents.htm) was available for under $100. That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. |
#15
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Scientific Calculator
Of all calculators I greatly prefer reverse Polish notation based
ones. They are far more powerful and very intuitive too. i On 2010-10-22, Martin Eastburn wrote: Ah - an Emacs user. I love the vertical column cut - e.g. the 4th column of numbers cut and put in the second as an insert. Martin On 10/21/2010 1:39 PM, Joe Pfeiffer wrote: I was a senior in high school in 1975... I'd had my good K&E bamboo slide rule for about a couple of months when the first great price crash for calculators hit. Suddenly a Melcor SC-535 (see http://www.thimet.de/calccollection/...5/Contents.htm) was available for under $100. That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. |
#16
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Scientific Calculator
"Ignoramus16025" wrote in message ... Of all calculators I greatly prefer reverse Polish notation based ones. They are far more powerful and very intuitive too. i I've always preferred HP's with RPN. I like to bring mine to a meeting and hand it to someone when they need a calculator. |
#17
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Scientific Calculator
I have an HP that does both. They (the designers) push you towards
algebraic notion as a standard. Easier to do some things in it so they say. I use it in the house and my TI in the shop - my cool HP clam box here in the house. So RPN is in my blood also, but in the ship it is algebra. Martin On 10/21/2010 9:13 PM, Ignoramus16025 wrote: Of all calculators I greatly prefer reverse Polish notation based ones. They are far more powerful and very intuitive too. i On 2010-10-22, Martin wrote: Ah - an Emacs user. I love the vertical column cut - e.g. the 4th column of numbers cut and put in the second as an insert. Martin On 10/21/2010 1:39 PM, Joe Pfeiffer wrote: I was a senior in high school in 1975... I'd had my good K&E bamboo slide rule for about a couple of months when the first great price crash for calculators hit. Suddenly a Melcor SC-535 (see http://www.thimet.de/calccollection/...5/Contents.htm) was available for under $100. That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. |
#18
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Scientific Calculator
Martin Eastburn wrote:
Ah - an Emacs user. I love the vertical column cut - e.g. the 4th column of numbers cut and put in the second as an insert. Martin On 10/21/2010 1:39 PM, Joe Pfeiffer wrote: I was a senior in high school in 1975... I'd had my good K&E bamboo slide rule for about a couple of months when the first great price crash for calculators hit. Suddenly a Melcor SC-535 (see http://www.thimet.de/calccollection/...5/Contents.htm) was available for under $100. That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. Qedit (for Windows) still does that. -- Richard Lamb |
#19
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Scientific Calculator
When I was in highschool, my Physics teacher spent a good portion of his
yearly budget on a Heathkit calculator because it did square roots and basic trig functions. About the time we finished soldering it together, HP came out their programmable pocket model (with the magnetic cards) and the prices fell on all the other calculators. I he had waited a year he could have bought a fully assembled calculator with a lot more functions for less than the Heathkit. Paul K. Dickman "Joe Pfeiffer" wrote in message ... I was a senior in high school in 1975... I'd had my good K&E bamboo slide rule for about a couple of months when the first great price crash for calculators hit. Suddenly a Melcor SC-535 (see http://www.thimet.de/calccollection/...5/Contents.htm) was available for under $100. That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. -- As we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously. (Benjamin Franklin) |
#20
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Scientific Calculator
I graduated College Physics / Mathematics with a K&E log log duplex
Decitrig and a Vector log log by Dietzgen. That was in 1969. Our finals were all day tests in Physics. Typically 4 questions. We brought lunch and drinks unless we drank coffee. And lots of pencils and a sharpener and drafting eraser. Martin On 10/22/2010 3:18 PM, Paul K. Dickman wrote: When I was in highschool, my Physics teacher spent a good portion of his yearly budget on a Heathkit calculator because it did square roots and basic trig functions. About the time we finished soldering it together, HP came out their programmable pocket model (with the magnetic cards) and the prices fell on all the other calculators. I he had waited a year he could have bought a fully assembled calculator with a lot more functions for less than the Heathkit. Paul K. Dickman "Joe wrote in message ... I was a senior in high school in 1975... I'd had my good K&E bamboo slide rule for about a couple of months when the first great price crash for calculators hit. Suddenly a Melcor SC-535 (see http://www.thimet.de/calccollection/...5/Contents.htm) was available for under $100. That calculator got me most of the way through undergrad... Now, of course, the two calculators I use are a mode in emacs and an application on my phone. -- As we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously. (Benjamin Franklin) |
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Scientific Calculator
"Martin Eastburn" wrote in message
... I graduated College Physics / Mathematics with a K&E log log duplex Decitrig and a Vector log log by Dietzgen. That was in 1969. Our finals were all day tests in Physics. Typically 4 questions. We brought lunch and drinks unless we drank coffee. And lots of pencils and a sharpener and drafting eraser. Martin I still remember lubricating the K&E with Talcum Powder. Of course, I used too much!!! -- Peter DiVergilio "A bumblebee flies faster than a Kubota tractor" |
#22
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Scientific Calculator
Martin Eastburn wrote:
.. I he had waited a year he could have bought a fully assembled calculator with a lot more functions for less than the Heathkit. Paul K. Dickman At least from when I started looking at them, "saving money" didn't seem to be a feature of a Heathkit product. Given the amount of work involved, the savings would be negligible. Seems like they were at least 70% of a retail product, if not more than one. Bill |
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Scientific Calculator
Karl Townsend wrote:
On Wed, 20 Oct 2010 12:16:23 -0700 (PDT), " wrote: Just a heads up. If you want a calculator in your tool box, it would be hard to beat the price of one from Dollar Tree. Ten digits, 56 functions for a buck. I bought one for my grandson. Dan In 1972, I got a 90 on a test instead of a 100 because I wasted time with my slip stick. So, I went out and spent $200 on an SR-10, four function plus reciprocal. I remember I had just got a raise from 1.60 all the way to 2.30 so it only took two weeks pay. I had a SR-51II that was stolen while I was stationed at MCAS Beaufort, it was replaced with a SR-56 that was a lot of fun to play with back then. Hey at least I had something I could program. Sucked having the program go away when you turned it off. Ah the days of red leds. Now I use easycalc on my Palm T|E. It isn't programable but you can create your own functions. http://easycalc.sourceforge.net/ I just wonder how much longer I can stay on a palm platform. I guess my replacements will be from ebay. Wes |
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