Inside old computers

... visual technology

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List of computers

I have the components of the following ancient computers.

  • Bull Gamma 10   ( 5 Articles )

    The Bull gamma 10 is the first small transistorized computers made by Bull. It is a nice mixture of a classic card punch machine and a modern computer. It contains a large amount of "petite relais (small relays)", a plugboard, a very fast card reader and puncher, transistorized logic, and 3 (!) different types of core memory.

    Bull gamma 10 (Kelkheim) front view

  • Bull Gamma55   ( 0 Articles )
    The Bull Gamma55 is a small machine built using similar components as in the Bull Gamma 10. Special is the use of a ROM to control the machine, thereby largely simplifying it design.
  • Univac 1040   ( 3 Articles )
    The Univac 1040 is a small computer built with discrete transistors (+/- 4000), typically used with punched card input and line printer output. It can contain between 4 and 16 k words of 6 bits.
  • Univac 2202   ( 0 Articles )

    The Univac 2202 is a card controller with limited memory (512 words of 6 bits, no parity). Special is that it had two card readers. It uses logic gates of the B family, and has a plugboard for control.

  • Univac 9200   ( 0 Articles )
    The Univac 9200 is built using a mix of boards with discrete components and simple DTL IC's. The IC's are extended with many diodes to extend the number of inputs. The memory is special: it uses a plated wire memory type that was very fast. A working computer (Univac 9400) from this series can be found here.
  • Honeywell H200   ( 0 Articles )
    The Honeywell H200 was very succesful as IBM1402 "clone". The system contained up to 16k memory with 6 bits words. Special was that the memory has two extra bits to tag start and end of sequences of characters.