ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Unusual Well Pump Switch Failure
by sabrown - 10/28/20 04:31 PM
Look at this mess...
by InspectorE - 10/27/20 09:09 PM
New tool
by gfretwell - 10/24/20 11:09 AM
Where is Everyone?
by Bill Addiss - 10/17/20 07:04 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
0 registered members (), 21 guests, and 13 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Calculators? #38976 06/07/04 08:26 AM
Joined: Jul 2002
Posts: 8,337
Trumpy Offline OP
Member
Here's a little question for you all.
What year did you see the first Electronic Calculator come on the market?.
What year did you first buy one and what brand was it?.
We were never allowed to have the new fangled adding machines at school when they first came out.
In hindsight that was really a blessing in disguise, we learned to add with our heads.
Look what happens when a supermarket loses power these days!. [Linked Image]

Work Gear for Electricians and the Trades
Re: Calculators? #38977 06/07/04 01:06 PM
Joined: Dec 2003
Posts: 886
H
hbiss Offline
Member
Hmm, good question. The first one I ever saw was at a company I worked for back in the mid 60's. This was a huge 2 piece unit not unlike our PC/monitor/keyboard setup. The "processor" sat on the floor with a numerical keypad and neon (nixie tube)display "terminal" attached by a multiconductor cable. This was only an electronic adding machine and replaced the mechanical clunkers in use back then. It would only add, subtract, multiply and divide.

We've come a long way.

-Hal

Re: Calculators? #38978 06/07/04 01:26 PM
Joined: Jul 2002
Posts: 8,337
Trumpy Offline OP
Member
Hal,
Ahh, the Nixie tube. {digresses for a moment}
Yes, we have come a long way!.
Great to see though. [Linked Image]

Re: Calculators? #38979 06/07/04 06:12 PM
Joined: Aug 2001
Posts: 7,520
P
pauluk Offline
Member
My father brought home a Brother (I forget the actual model number) in the early 1970s. I can't remember the brand or model of the first one I owned, thanks to my parents, but I can picture it even now. It was the typical LED-display calculator of the time, four functions plus constant. I remember the nice large square keys compared to some other models, with red and orange for the C and K keys.

Like many others, it was probably sold under several different brand names. I think I was about 8 or 9 at the time, so that would place it to 1974/75. Then my parents bought me a Texas Instrument Programmable TI-57 for Christmas in 1977.

Despite that, and perhaps aided by having a mother who was a math teacher, I still learned to do mental arithmetic in my head, and unlike many of today's kids, don't end up using a calcultor to add 2 and 2! [Linked Image]

For some great old machines, including some of those earlier models from the 1960s, have a look here:
http://www.oldcalculatormuseum.com/

If you're like me, and then discovered just how wonderful the Hewlett-Packard models were, have a look at this site:
http://www.hpmuseum.org/

Re: Calculators? #38980 06/07/04 06:32 PM
Joined: Oct 2000
Posts: 3,961
Bill Addiss Offline
Member
I vaguely remember some type of game that we used to play on a TI Calculator. I don't remember specifics, but after entering some specific info into the Calculator the object of the game was to slow the speed of a falling object (or a spacecraft?) to keep it from crashing.

BTW, I used my Dads' sliderule before a calculator. The words 'Log Log Duplex Decitrig' hold no meaning for me but are burned into my memory.

Help Me!! ...
[Linked Image]
Bill


Bill
Re: Calculators? #38981 06/07/04 09:30 PM
Joined: Dec 2003
Posts: 886
H
hbiss Offline
Member
Yes the slide rule. I had a kid (kid compared to a slide rule anyway, he was in his twenties) come to me with one and ask "how do you measure anything with this?" [Linked Image]

I still have a HP-21 and use it everyday. [Linked Image]

-Hal

Re: Calculators? #38982 06/07/04 10:42 PM
Joined: Feb 2004
Posts: 133
E
Electric Ian Offline
Member
The "Bomar Brain" cica 1975. This was a 4 function calculator and as I recall sold for about $80 to $100. I believe there was one available with a square root function but that was much more expensive.

Re: Calculators? #38983 06/08/04 04:18 AM
Joined: Jul 2003
Posts: 394
B
Big Jim Offline
Member
I was at colorado School of Mines in the early 70's. Because of our reputation as a school, we got one of the first allocations of the new HP35 scientific calculator. I blew my savings and bought one - $150 back then, I think - and I felt as though I had died and gone to heaven when I used it on the first test. We had been trained to use all those funny extra scales on the slide rule and never left home without a book of tables. The HP was all that and more.

Re: Calculators? #38984 06/08/04 06:22 AM
Joined: Feb 2004
Posts: 62
S
SteveMc Offline
Member
I remember having a TI in the mid-70's when I went back to college. One of my class mates asked what the (AC adapter)jack on the side was used for, we told him it was for an earphone so you could get the answers during a test and the instructor wouldn't know.

Re: Calculators? #38985 06/08/04 09:01 AM
Joined: Aug 2001
Posts: 7,520
P
pauluk Offline
Member
I still have an old slide rule that was my father's tucked away in a cupboard, complete with a guide book. Learning to use one really isn't that difficult, and I learned how to do basic multiplication and division on one when I was a kid. (The HP museum site linked above has a section on slide rules for anyone interested.)

By the way, it's interesting to look at some old science-fiction books and movies of the 1950s where they depict the navigator carrying around a slide rule to perform hisr navigational computations. My, how some things don't turn out as people thought they would. [Linked Image]

Page 1 of 2 1 2

Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Radar
Radar
Los Angeles, CA
Posts: 349
Joined: April 2004
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
271,026 Are you busy
205,035 Re: Forum
193,143 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3