Browse Prior Art Database

Computer

IP.com Disclosure Number: IPCOM000091977D
Original Publication Date: 1968-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 3 page(s) / 51K

Publishing Venue

IBM

Related People

Hitt, DC: AUTHOR [+3]

Abstract

This small general purpose computer comprises central processor 1 and its associated I/O equipment, keyboard-printer 2, display oscilloscope unit 3, and dictating machine 4 of the belt type. There is also a general purpose keyboard 5 on processor 1.

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Computer

This small general purpose computer comprises central processor 1 and its associated I/O equipment, keyboard-printer 2, display oscilloscope unit 3, and dictating machine 4 of the belt type. There is also a general purpose keyboard 5 on processor 1.

Printer-keyboard 2 is used to set alphanumeric data in processor 1 or to print either the entered data or stored data from such processor. Dictating machine 4 has its control lines activated by processor 1 and is used as a random access bulk storage. Data is stored in records preceded by addresses and start markers and is stored as an audible signal for a 1 bit or no signal for a 0 bit. Manual controls are controlled by processor 1 to start moving the belt, backspace one track or turn on the write circuits. Unit 3 has two eight-bit registers in processor 1 for horizontal and vertical positioning so that a 256 x 256 grid is available. A program is in storage to trace out desired alphanumeric characters.

Processor 1 contains logic cards for data transfer operations involving the I/O units and also contains a 512 byte core storage area for program and data storage. Keyboard 5 has 16 keys and is available for general data entry including control of unit 3 for drawings or animation of the display. Control switches and lights 6 are used for control over and indication of the central processor's functions.

A small 512 byte core storage holds the working data and has a storage register for input or output of data. The storage register is the single work register of the machine although two other registers are used. These are the register which holds the I/O instruction address and the link register which holds the address in a main program from which branches are made to subroutine programs.

Very few op codes are sufficient for use in microprograms. There are four ...