910 CURTA MODEL I POCKET CALCULATOR: (29KB)
EARLY MECHANICAL AND ELECTRONIC CALCULATORS AND COMPUTER EQUIPMENT
910 CURTA MODEL I POCKET CALCULATOR: (29KB)In its original case with the original instructions, this hand-cranked pocket calculator consists of a complex set of gears that perform calculations and display results on mechanical digital counters. This was the most elaborate and expensive pocket calculator to appear on the market prior to the introduction of electronic pocket calculators. CURTA calculators are very hard to find since they were so expensive that relatively few were sold. Traded 12-17-97.
1000 IBM HAND OPERATED PAPER TAPE PUNCH: (33KB)This rare grey metal unit punches holes into paper tapes, one hole at a time.
1020 IBM 10 DIGIT HAND OPERATED CARD PUNCH: This rare grey metal unit
accepts IBM cards and punches holes in them, one column at a time.
IBM cards measure 7-3/8" long by 3-1/4" high.
They contain 80 columns, each representing a digit from 0 to 9.
They were the way data was entered into computers from the 1940's
through the 1970's. Data was usually entered by punching the cards on
a keyboard-operated electrical "keypunch" but a few hand-operated
card punches such as this were manufactured for making corrections
and single cards.
1050 WRIGHT PUNCH Model 2600 MANUALLY OPERATED IBM CARD PUNCH: (34KB)
This rare portable mechanical punch has a movable carriage which
positions an IBM card directly under a single hole punch which is
operated by a 13 key typewriter-like keyboard. Pressing a key
punches a hole in the card and then allows the card to move one
space to the left, ready for the next hole. It was manufactured by:
Barry Wright Corp. P.O.Box 5061, High Point, North Carolina.
(See above item 1020 for explanation of IBM cards.)
MONROE CR-1 PORTABLE IBM CARD READER: This small portable card
reader allowed users to read IBM Cards directly into Monroe
5000 COMPUCORP 324G "Scientist" "Pocket" calculator:
This early "pocket" scientific calculator measures 9"x6"x2.5". It was made by Compucorp which was a division of Computer Design Corp of Los Angeles, Calif.
It has a 16 digit lighted display and performs many mathematical and programmed functions:(14KB) s/n 5314865. It is in good working condition and has the original power supply. It is engraved USN/NSRDC where is was apparently used.
7070 * EARLY UNUSUAL DISCRETE COMPONENT
COMPUTER CIRCUIT BOARD:(61KB)
This is a very unusual early computer circuit board in which
the discrete transistors, resistors, condensers and diodes are
mounted vertically above the main board and small secondary
circuit boards are soldered to the upper ends of each
7070a * A view of the entire board:(79KB)
7070 * A Close view of the discrete components.
8500 * EARLY ALTOS Z-80 CPU PERSONAL COMPUTER:(14KB)
This is one of the very early personal computer systems which used the
Z-80 CPU chip.
8500a A view of the computer with the cover removed:(18KB)
8500b A view of the computer with the CPU board hinged upwards:(11KB)
8500c A view of the power supply compartment:(26KB)
8500d A view of the manufacturer's label on the back of the compuer:(22KB)
8600 * EARLY ROCKWELL AIM-65 PERSONAL COMPUTER WITH
BUILT-IN PRINTER:(14KB) Not many of these early Rockwell Personal
Computers were made. The system consists of a motherboard on which is also
mounted a printer mechanism that prints on adding-machine tape. The CPU board
requires +5 and +12 volts which must be connected to binding posts on the side
of the board. A large and detailed schematic diagram and a complete set of
manuals accompanied the computer and includes a special book on FORTH for use
with this computer.
8600a A closer view of the CPU board:(22KB)
8700 * OHIO SCIENTIFIC CHALLENGER C1P PERSONAL
COMPUTER:(23KB)This is a lovely early Ohio Scientific Challenger
Model 1P Personal Computer. It is such an early version that the manual
carries a publication date of Aug, 1978 and is marked 'preliminary.
I found it with a box of program tapes and a set of manuals. The manuals are
entitled: Superboard II, Challenger 1P, Users Manual (Preliminary, Aug, 1978).
The Challenger Character Graphics Reference Manual, Aug, 1978. The Challenger
Technical Report, Aug, 1978. The 8K Basic-in-ROM Reference Manual, Aug, 1978.
How to use the SCX-102 and SCX 103 sampler tapes. Several Advertisements, and
articles about the computer.
8700a A view of the manuals:(15KB>
8700b A closer view of the computer:(19KB>
9000 * EARLY COMMODORE ''PET'' PERSONAL COMPUTER:(22KB)
This is one of the very early personal computers desgined to be
used in the home environment. It had a peculiar little keyboard and
a built-in cassette tape recorder for program storage and playback.
It was supplied with 4K of memory.
RADIO SHACK MODEL 100 PORTABLE LAPTOP COMPUTERS: These popular
computers included a word-processor, database, and communications
program and ran on "AA" batteries. Several in inventory.
RADIO SHACK MODELS 1, 3, 4, 4P: Many of these popular personal
computers are in my collection as well as parts and manuals.
NOTE: More computer equipment will be added as soon as possible.
NOTE: I AM ALWAYS LOOKING TO BUY, TRADE, OR PHOTOGRAPH VERY UNUSUAL ENIGMA-RELATED ITEMS, EARLY COMPUTERS, AND TELEGRAPH KEYS !
Professor Thomas B. Perera
Montclair State University
COPYRIGHT NOTICE: (Copyright (c) 2013: Prof. Tom Perera Ph. D.)
Although all the pictures and text are copyrighted, you may use any of them for your own personal applications including public lectures and demonstrations, publications and websites as long as you mention the www.w1tp.com/enigma Museum. If you plan to offer them for sale to the public in any form, you must email me for permission which I will generally grant as long as you mention my museum: http://w1tp.com/enigma. My email address is given at the bottom of this page. Some of the material may require contacting other copyright owners for commercial use and I will inform you by email. Please also see the disclaimer of warranty.