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Does anybody make a machinist oriented calculator ?
or what calculators does everyone use ? how about a waterproof one ? thanks Mike |
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No machinist oriented one, specifically. I keep a TI fractions capable
calculator on my bench. It works equally well in fractions or decimals or mixed, and converts freely between the 2. Mine came from Radio Shack. For calculations in long formulas a direct algebraic entry calculator is handy. One of these, that is programmable, IMO would make a very good "machinist oriented" calculator. Bob Swinney "Mike" wrote in message om... Does anybody make a machinist oriented calculator ? or what calculators does everyone use ? how about a waterproof one ? thanks Mike |
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In article , Mike says...
or what calculators ... HP15C for me. Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== |
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Mike wrote: Does anybody make a machinist oriented calculator ? or what calculators does everyone use ? how about a waterproof one ? thanks Mike Try Google. Here are a couple. There is software available for your PC too. http://www.toolingu.com/bookstore/it...spx?item_ID=29 http://www.eisc.com/catalog/product_...products_id=28 -- Randy Replogle (Central Indiana) |
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In my shop, I use whatever dirt cheap or free POS I have at the moment.
Sometimes my brain doesn't want to subtract 0.916 from 1.241 or something. Upstairs, I use an HP-15C, which I believe is the absolute pinnacle of calculators as far as what it can do and user interface. There are much newer lower power models but you have to program those using a dumb computer- science-like language. The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, you can learn *everything* on once, and you never forget it. Were I to sell it today (fat chance) it would bring nearly double what I paid for it. At my last engineering job I had young engineers gasp when they saw it and say things like "Aren't you worried someone will STEAL that? Do you know how much those go for on ebay now?" Grant Mike wrote: Does anybody make a machinist oriented calculator ? or what calculators does everyone use ? how about a waterproof one ? thanks Mike |
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In article , Grant Erwin says...
The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, Say what? I think the batteries in my 15C are about 10 years old at the moment. Are more modern calculators even *better*? Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== |
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"Grant Erwin" wrote in message ... The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, you can learn *everything* on once, and you never forget it. Were I to sell it today (fat chance) it would bring nearly double what I paid for it. At my last engineering job I had young engineers gasp when they saw it and say things like "Aren't you worried someone will STEAL that? Do you know how much those go for on ebay now?" That blew my mind! I never would have guessed my HP11C is worth more than I paid for it twenty plus years ago!! What do you mean by battery hungery?! My HP11C has the original 20+ year old batteries in it! I have it laying in the tool box in the shop. I rarely use it, but ran across it the other day and it is still working fine! Greg |
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Mike wrote:
Does anybody make a machinist oriented calculator ? or what calculators does everyone use ? how about a waterproof one ? thanks Mike How about a abacus or soroban? They are prety much water, lubricant etc proof. :-) ...lew... |
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Greg O wrote:
"Grant Erwin" wrote in message ... The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, you can learn *everything* on once, and you never forget it. Were I to sell it today (fat chance) it would bring nearly double what I paid for it. At my last engineering job I had young engineers gasp when they saw it and say things like "Aren't you worried someone will STEAL that? Do you know how much those go for on ebay now?" That blew my mind! I never would have guessed my HP11C is worth more than I paid for it twenty plus years ago!! What do you mean by battery hungery?! My HP11C has the original 20+ year old batteries in it! I have it laying in the tool box in the shop. I rarely use it, but ran across it the other day and it is still working fine! Greg My 10C is also on its original battery and it's OLD. Don't remember how old it is. Whenever the HP 21 keyboarf started to double on a few keys. Must have been shortly after the 11C came out. ...lew... |
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Mike wrote:
Does anybody make a machinist oriented calculator ? or what calculators does everyone use ? how about a waterproof one ? thanks Mike Mike, I use an older HP 11C Scientific, among some other vintage HP's and keep it in a one quart clear plastic zip lock bag that I replace frequently. Fold the bag round back and tape it. The reason for the affinity for HP is that I like RPN and the calculator carries 12 places of accuracy, whether you can see it on the readout or not. If I want to lay out 127 divisions around a circle, each step is 2.83 degrees, but calculator will carry 2.83464566929 degrees to be added to the 2.83 degrees. This very accurate number allows the error to be distributed around the circle as best as you can read your dial. Henry |
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In article ,
jim rozen wrote: In article , Grant Erwin says... The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, Say what? I think the batteries in my 15C are about 10 years old at the moment. Are more modern calculators even *better*? Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== I have and use a 15C too... however, I change the batteries every 3 or 4 years as I worry about them corroding. I figure batteries are cheap, 15C's are expensive now. Erik PS, Also have a 32SII. It does fractions very well, best I've ever seen. |
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"Erik" wrote in message
... In article , jim rozen wrote: In article , Grant Erwin says... The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, Say what? I think the batteries in my 15C are about 10 years old at the moment. Are more modern calculators even *better*? Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== I have and use a 15C too... however, I change the batteries every 3 or 4 years as I worry about them corroding. I figure batteries are cheap, 15C's are expensive now. I have a 12C and a 15C, and I change batteries every ten years, whether they need it or not. g The battery life in those things is beyond belief. That, and my Fluke 75 voltmeter. The battery (or batteries?) has been in there for at least 15 years, and it's still going strong. Ed Huntress |
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Yup, they're old NMOS technology, whereas today's are CMOS. Also, today's
voltages are much much lower. - GWE jim rozen wrote: In article , Grant Erwin says... The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, Say what? I think the batteries in my 15C are about 10 years old at the moment. Are more modern calculators even *better*? Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== |
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Yeah, and don't forget possibly the greatest savings is that the LCDs use
ambient light and pose no drain on the batt. Bob Swinney "Grant Erwin" wrote in message ... Yup, they're old NMOS technology, whereas today's are CMOS. Also, today's voltages are much much lower. - GWE jim rozen wrote: In article , Grant Erwin says... The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, Say what? I think the batteries in my 15C are about 10 years old at the moment. Are more modern calculators even *better*? Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== |
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What was the name of that mechanical calculator you guys were discussing
here a few months ago? It was a round anodized beast. Lance |
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In article Hsh9c.23365$li5.14848@pd7tw3no, Lance A Boyle says...
What was the name of that mechanical calculator you guys were discussing here a few months ago? It was a round anodized beast. Curta. Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== |
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jim rozen wrote: In article Hsh9c.23365$li5.14848@pd7tw3no, Lance A Boyle says... What was the name of that mechanical calculator you guys were discussing here a few months ago? It was a round anodized beast. Curta. Jim That's it. Thanks. Lance |
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In article ,
jim rozen wrote: In article Hsh9c.23365$li5.14848@pd7tw3no, Lance A Boyle says... What was the name of that mechanical calculator you guys were discussing here a few months ago? It was a round anodized beast. Curta. Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== Here's a site with just about everything you'd ever want to know about HP calculators. http://www.hpmuseum.org/hpmuseum.html There is some on slide rules and Curta's too in the 'Before HP Calculators' link within. Erik |
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In article ,
jim rozen wrote: In article , Mike says... or what calculators ... HP15C for me. And for me. I keep one in my belt pouch (along with a 16C for other purposes), and a second 15C in the shop, in a Ziploc baggie to keep coolant and swarf out of it. Enjoy, DoN. -- 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 --- |
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In article ,
Grant Erwin wrote: jim rozen wrote: In article , Grant Erwin says... [ ... ] The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, [ ... ] Say what? I think the batteries in my 15C are about 10 years old at the moment. Are more modern calculators even *better*? Yup, they're old NMOS technology, whereas today's are CMOS. Also, today's voltages are much much lower. - GWE Hmm ... I *think* that the 'C' in the model number indicates that it is one of the early ones based on CMOS technology, instead of the NMOS used in the earlier ones -- 35, 45, 55, 65, 67, etc. I believe that there was a 25C as well, a smaller version of the form factor of the 35 et all, but with CMOS technology. Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) Enjoy, DoN. -- 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 --- |
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On 27 Mar 2004 23:28:58 -0500, the renowned (DoN.
Nichols) wrote: In article , Grant Erwin wrote: jim rozen wrote: In article , Grant Erwin says... [ ... ] The HP-1XC models, on the other hand, although slow and battery-hungry by today's standards, [ ... ] Say what? I think the batteries in my 15C are about 10 years old at the moment. Are more modern calculators even *better*? Yup, they're old NMOS technology, whereas today's are CMOS. Also, today's voltages are much much lower. - GWE Hmm ... I *think* that the 'C' in the model number indicates that it is one of the early ones based on CMOS technology, instead of the NMOS used in the earlier ones -- 35, 45, 55, 65, 67, etc. I believe that there was a 25C as well, a smaller version of the form factor of the 35 et all, but with CMOS technology. Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) The later ones, like the HP48 series, are much worse on batteries than the earlier C ones. Probably 50 times worse in terms of current. They go through a set of 3 AAA cells in no time. The others use much lower capacity button cells and seem to last forever. I think HP must have switched from their own ASICs to cheaper off-the-shelf technology. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com |
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Hmm ... I *think* that the 'C' in the model number indicates that it is one of the early ones based on CMOS technology, instead of the NMOS used in the earlier ones -- 35, 45, 55, 65, 67, etc. I believe that there was a 25C as well, a smaller version of the form factor of the 35 et all, but with CMOS technology. Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) Enjoy, DoN. I wouldn't bet my life on it, but I recall reading that the 'C' in all those HP calculator model numbers meant they had continuous memory... something really cuting edge at the time. I think the 25-C might have been the first with it. Much later they dropped the 'C', but all HP's (that I know of anyway) still have the continuous memory feature. Erik |
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Lance A Boyle wrote:
What was the name of that mechanical calculator you guys were discussing here a few months ago? It was a round anodized beast. Lance Curta. ...lew... |
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In article , DoN. Nichols says...
Hmm ... I *think* that the 'C' in the model number indicates that it is one of the early ones based on CMOS technology, Ah HAA! I always wondered about that. Where were the A, B, D, etc? What a throw-back to a different time, imagine a manufacturer putting the logic type in a part number, now. Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== |
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"Spehro Pefhany" wrote in message Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) The later ones, like the HP48 series, are much worse on batteries than the earlier C ones. Probably 50 times worse in terms of current. They go through a set of 3 AAA cells in no time. The others use much lower capacity button cells and seem to last forever. I think HP must have switched from their own ASICs to cheaper off-the-shelf technology. My first calculator I bought for college was a TI-55, the old style, brown door stop looking model. I bought batteries by the case! That sucker, (literally), could eat a battery in one day of heavy use. That is when I bought the HP. Best investment I ever made, as far as calculators go. I remember buying the HP and tosing the TI-55 in the trash can during a class. Two or three guys dug it out and were fighting over it! Greg |
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Greg O wrote:
"Spehro Pefhany" wrote in message Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) The later ones, like the HP48 series, are much worse on batteries than the earlier C ones. Probably 50 times worse in terms of current. They go through a set of 3 AAA cells in no time. The others use much lower capacity button cells and seem to last forever. I think HP must have switched from their own ASICs to cheaper off-the-shelf technology. My first calculator I bought for college was a TI-55, the old style, brown door stop looking model. I bought batteries by the case! That sucker, (literally), could eat a battery in one day of heavy use. That is when I bought the HP. Best investment I ever made, as far as calculators go. I remember buying the HP and tosing the TI-55 in the trash can during a class. Two or three guys dug it out and were fighting over it! Greg Mike, I use an older HP 11C Scientific, among some other vintage HP's and keep it in a one quart clear plastic zip lock bag that I replace frequently. Fold the bag round back and tape it. The reason for the affinity for HP is that I like RPN and the calculator carries 12 places of accuracy, whether you can see it on the readout or not. If I want to lay out 127 divisions around a circle, each step is 2.83 degrees, but calculator will carry 2.83464566929 degrees to be added to the 2.83 degrees. This very accurate number allows the error to be distributed around the circle as best as you can read your dial. Henry |
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Greg O wrote:
"Spehro Pefhany" wrote in message Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) The later ones, like the HP48 series, are much worse on batteries than the earlier C ones. Probably 50 times worse in terms of current. They go through a set of 3 AAA cells in no time. The others use much lower capacity button cells and seem to last forever. I think HP must have switched from their own ASICs to cheaper off-the-shelf technology. My first calculator I bought for college was a TI-55, the old style, brown door stop looking model. I bought batteries by the case! That sucker, (literally), could eat a battery in one day of heavy use. That is when I bought the HP. Best investment I ever made, as far as calculators go. I remember buying the HP and tosing the TI-55 in the trash can during a class. Two or three guys dug it out and were fighting over it! Greg Gosh - a Calculator in college - what a dream! Bought my first plug in the wall 4 banger + memory mind you Nixie tube 12 digits, Cannon IIRC in '70. Bought a SR-50 a few years later. The first one was $600.00 and the SR-50 was 150? Then I got to put down the docs on calculation of logs with a 4 banner that was in EDN or Electronics at the time. Those were the days, engineering... Martin -- Martin Eastburn, Barbara Eastburn @ home at Lion's Lair with our computer NRA LOH, NRA Life NRA Second Amendment Task Force Charter Founder |
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On Mon, 29 Mar 2004 04:38:46 GMT, "Martin H. Eastburn"
wrote: Greg O wrote: "Spehro Pefhany" wrote in message Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) The later ones, like the HP48 series, are much worse on batteries than the earlier C ones. Probably 50 times worse in terms of current. They go through a set of 3 AAA cells in no time. The others use much lower capacity button cells and seem to last forever. I think HP must have switched from their own ASICs to cheaper off-the-shelf technology. My first calculator I bought for college was a TI-55, the old style, brown door stop looking model. I bought batteries by the case! That sucker, (literally), could eat a battery in one day of heavy use. That is when I bought the HP. Best investment I ever made, as far as calculators go. I remember buying the HP and tosing the TI-55 in the trash can during a class. Two or three guys dug it out and were fighting over it! Greg Gosh - a Calculator in college - what a dream! Bought my first plug in the wall 4 banger + memory mind you Nixie tube 12 digits, Cannon IIRC in '70. Bought a SR-50 a few years later. The first one was $600.00 and the SR-50 was 150? Then I got to put down the docs on calculation of logs with a 4 banner that was in EDN or Electronics at the time. Those were the days, engineering... Martin In 1972 I was using a hand cranked Monroe "Educator" when I saw a Rapidman 800 on sale for $99.99, typical 8 digit four banger that ran on four AA batteries with no memory function. The other day I saw the little "credit card" four function plus memory powered by a watch battery for $0.19. you can't even buy the battery for that. My favourite though was the TI-59 programmable, just wish they were a little more durable. I developed a lot of programs for that while working in the field. once I got moved to regional office, I only used it about twice per year and it died of old age and neglect. Gerry :-)} London, Canada |
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In article ,
Henry Kratt wrote: [ ... ] I use an older HP 11C Scientific, among some other vintage HP's and keep it in a one quart clear plastic zip lock bag that I replace frequently. Fold the bag round back and tape it. The reason for the affinity for HP is that I like RPN and the calculator carries 12 places of accuracy, whether you can see it on the readout or not. If I want to lay out 127 divisions around a circle, each step is 2.83 degrees, but calculator will carry 2.83464566929 degrees to be added to the 2.83 degrees. This very accurate number allows the error to be distributed around the circle as best as you can read your dial. And -- with the 15C at least, you can enter a radius and the angle, and it will convert it from polar to rectangular notation, so you can crank in X and Y coordinates on the mill prior to drilling the holes, so you can do it without a rotary table, if you need to do things that way. Enjoy, DoN. -- 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 --- |
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In article ,
Erik wrote: Hmm ... I *think* that the 'C' in the model number indicates that it is one of the early ones based on CMOS technology, instead of the NMOS used in the earlier ones -- 35, 45, 55, 65, 67, etc. I believe that there was a 25C as well, a smaller version of the form factor of the 35 et all, but with CMOS technology. [ ... ] I wouldn't bet my life on it, but I recall reading that the 'C' in all those HP calculator model numbers meant they had continuous memory... something really cuting edge at the time. I think the 25-C might have been the first with it. You might well be right about that -- but at least the memory had to be CMOS to not drain the batteries over time, and mine still run several years on a single set of three 357s. Maybe I should hook it up to a power supply, and measure the current drain when "on" and "off", just to see. Enjoy, DoN. -- 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 --- |
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"DoN. Nichols" wrote in message ... In article , Erik wrote: Hmm ... I *think* that the 'C' in the model number indicates that it is one of the early ones based on CMOS technology, instead of the NMOS used in the earlier ones -- 35, 45, 55, 65, 67, etc. I believe that there was a 25C as well, a smaller version of the form factor of the 35 et all, but with CMOS technology. [ ... ] I wouldn't bet my life on it, but I recall reading that the 'C' in all those HP calculator model numbers meant they had continuous memory... something really cuting edge at the time. I think the 25-C might have been the first with it. You might well be right about that -- but at least the memory had to be CMOS to not drain the batteries over time, and mine still run several years on a single set of three 357s. Maybe I should hook it up to a power supply, and measure the current drain when "on" and "off", just to see. Enjoy, DoN. The '25 from 10' away looked like a mini version of the original '35 but the '25 was a full-bore programmable calculator, registers, conditional branching, could do some pretty neat things with it. The '25C was the '25 with a battery backed-up CMOS for the program storage. Both had red-LED displays and both ran on a pair of AA NiCd's. The '15C and later 'C's by were LCD display and ran on watch batteries (i.e. 357). The LED display calculators gave the impression of speed because the displays flashed while they worked. The LCD models I recall seemed slow at first because the display just blanked until it was done doing whatever. They also took longer to respond to each key entry, maybe that was it. I change the batteries in my '25 every 5 years or so. For whatever reason, familiarity, I don't know, I have a bunch of the later LCD models but still like the '25 best, and use it the most. That being a relative term, as almost anything I don't crunch in my head is better off being done in a spreadsheet. Great tools. And they are all great around metal! Bob |
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In article , DoN. Nichols says...
And -- with the 15C at least, you can enter a radius and the angle, and it will convert it from polar to rectangular notation, so you can crank in X and Y coordinates on the mill prior to drilling the holes, so you can do it without a rotary table, if you need to do things that way. Ah... is *that* what the polar/rect conversion on that thing is good for! I've always resorted to trig conversion. I'll have to give that a tryout at the next chance. Jim ================================================== please reply to: JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com ================================================== |
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"Gerald Miller" wrote in message ... On Mon, 29 Mar 2004 04:38:46 GMT, "Martin H. Eastburn" wrote: Greg O wrote: "Spehro Pefhany" wrote in message Those earlier ones *were* battery hungry. The 15C lasts a very long time, except when a piece of heavy equipment holds some buttons depressed for a month or two. :-) The later ones, like the HP48 series, are much worse on batteries than the earlier C ones. Probably 50 times worse in terms of current. They go through a set of 3 AAA cells in no time. The others use much lower capacity button cells and seem to last forever. I think HP must have switched from their own ASICs to cheaper off-the-shelf technology. My first calculator I bought for college was a TI-55, the old style, brown door stop looking model. I bought batteries by the case! That sucker, (literally), could eat a battery in one day of heavy use. That is when I bought the HP. Best investment I ever made, as far as calculators go. I remember buying the HP and tosing the TI-55 in the trash can during a class. Two or three guys dug it out and were fighting over it! Greg Gosh - a Calculator in college - what a dream! Bought my first plug in the wall 4 banger + memory mind you Nixie tube 12 digits, Cannon IIRC in '70. Bought a SR-50 a few years later. The first one was $600.00 and the SR-50 was 150? Then I got to put down the docs on calculation of logs with a 4 banner that was in EDN or Electronics at the time. Those were the days, engineering... Martin In 1972 I was using a hand cranked Monroe "Educator" when I saw a Rapidman 800 on sale for $99.99, typical 8 digit four banger that ran on four AA batteries with no memory function. The other day I saw the little "credit card" four function plus memory powered by a watch battery for $0.19. you can't even buy the battery for that. My favourite though was the TI-59 programmable, just wish they were a little more durable. I developed a lot of programs for that while working in the field. once I got moved to regional office, I only used it about twice per year and it died of old age and neglect. Gerry :-)} London, Canada About time someone mentioned the TI-59. Mine got me through engineering, replacing a lot of calculus that I didn't enjoy at the time with many loops through some little programmed iteration ... ah the memories. |
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On Tue, 30 Mar 2004 10:12:25 -0600, "Dave Keith"
wrote: About time someone mentioned the TI-59. Mine got me through engineering, replacing a lot of calculus that I didn't enjoy at the time with many loops through some little programmed iteration ... ah the memories. You must have been rich, I got a TI-58 in my last year. Before that I had a non-programmable Commodore calculator that did a lot of statistical functions and also had hyperbolic functions and complex arithmetic....possibly the most useful calculator I have ever had. Before that I had a British Thornton log/trig slide rule which was pretty damned fast :-) Mark Rand RTFM |
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Erik wrote in message ...
PS, Also have a 32SII. It does fractions very well, best I've ever seen. I have the 32SII as well; excellent kit. Do you happen to know if the manual is available electronically anywhere? I tried HP, but only non-english versions were available. Thanks for any help. |
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