#FRIDEN CALCULATOR MANUAL CODE#
#FRIDEN CALCULATOR MANUAL SERIES#

The mechanical calculators featured here are typical machines which were ousted by the cheap electronic calculators which were gradually developed during the 1960s and early 1970s. Leibniz, both in the 17th century, and Charles Xavier Thomas's Arithmometer in the 19th century. These include the Pascaline invented by Blaise Pascal, and the Stepped Reckoner invented by Models made before the end of the 19th century are very rare and are usually only to be seen in museums and pictured in books. Shows representative examples of the different types.

#FRIDEN CALCULATOR MANUAL CODE#

Hand wired transistors, all in nice sockets.ДЄstrodata Time Code Translator - makes a nice digital clock.Д¬ounter board - no IC's used here, just transistors.The basic operating principles of mechanical calculators changed little from the end of the 19th century to their obsolescence in the 1970s, though there were many developments in the mechanisms and the materials used. Parabam digital clock, no display (fuzzy photo).Д¬ircuit boards using the same technology as the display version. Sperry Univac TS-2940(V)/UYK-7(V)Test Set. Here's a test set for the UKY-7(V) computer, another nice panel!. Sperry Univac Military TS-2940(V)/UYK-7(V)Test Set, Computer Logic Unit

Sperry Univac Military CV-2342B/UKY panel. Sperry Univac Military CV-2342B/UYK Buffer. Lights and switches! Many (100's) of small plug-in cards, some with flat-pack IC's. If anyone knows what this Univac box was used with and what it does please email me. Sperry Univac Military CV-2342B/UYK Buffer Possibly Data I/O's first product: Data I/O's first product, a PROM programmer with paper tape.Д¬alcomp (California Computer Products) model 960 Plotter. Mnemotron CAT 400B - memory logic boards. CAT 400C 'Computer of Average Transients' - uses transistors and core memory. Mnemotron CAT 400B and TMC CAT 400C Technical Measurement Corp. processor using transistors and core memory. Here's the set of 25 dual heads on the bottom of the disk platter, all nicely alligned. It took 2 hours to get them all realigned again. Here are 25 dual heads arranged as 5x5 with one extra (clock?) They are all messed up because I removed it upside down. Head cover removed showing the top disk surface.

Most chips on both boards have 1985 date codes but the gold ceramic ones are from 1974.Д«ack side of the bottom board, with blue ECO wires.Д«oth boards removed showing the top of the disk housing.Д¬lose up of a fixed head connection board. With 100 heads (50/side), assuming they are all used for data, that's about 818 KBytes total.Д«ackside of the top board showing cables. Label says it's 8 blocks of 8376 bits each for a grand total of 8376 bytes per head. This unit was built in 1986.ДЄnother view of the assembly showing it's layered construction. Singer Librascope Magnetic Disc Memory.Д¬over removed showing the top circuit board. Missing a button and switch.ДЄutonetics D37 Control and Display Panel.

#FRIDEN CALCULATOR MANUAL SERIES#

Possibly from an IBM series 700 system?ДЇrom the button labels, it could be a tape controller.ДЄnother unknown computer panel. Believed to come from a telephone company central office.ДЄnother front panel from the same system.

Tektronix 4663 'C' size flatbed plotter.

Tektronix 4114, storage tube based terminal.

Tektronix 4014, storage tube based terminal.

Tektronix 4010, storage tube based terminal.

HP 9830 calculator / computer (runs BASIC).

Tektronix Model 4051E01 ROM Expander for the 4051 computer. Monroe CR-2 punched / marked card reader. One display section (two digits) was not working when I received it, but I was able to This calculator used the Sperry/Beckman type 'Panaplex' displays. Victor 1400 CRT based calculator, front view. Was badly broken during shipping but the calculator survived. This calculator uses a large CRT (5') as the display.

Victor 1400 Series Calculator w/CRT display. Third board, has two round can IC's that mount through the board. Note the extensive use of bypass capacitors. Inside view showing plug-in circuit boards.Дisplay board, I removed the broken Nixie (a model CD88 tube if anyone has one to spare).ДЇirst logic board. Panasonic Model 1200 Calculator with Nixie tubes. Has 12 display tubes that swaps between two pages (24 digits).ДЄnother Olympia ICR 412 calculator, front view. Sharp Compet 384P programmable calculator.Д¬lose up of the printer and card reader/writer. All three have power supply problems and are not yet working. These three calculators use CRT's as the display. pdf's by right clicking on the title and selecting 'save target link as'

Friden calculator manual