DATAmatic 1000

The DATAmatic 1000 is an obsolete computer system from Honeywell introduced in 1957. It uses vacuum tubes and crystal diodes for logic, and featured a unique magnetic tape format for storage.

The CPU uses a 48-bit word (plus four check bits). A word can hold 12 decimal digits (11 digits plus sign) or 8 six-bit alphanumeric characters. The system includes magnetic core storage of 2000 words or 24,000 digits in two banks, called "High-Speed Memory." Words in High-Speed Memory are also called "registers" in the documentation. The system also includes two input and two output tape buffer storage units of 62 words (744 digits) each.

The instructions are three address and all operations are storage-to-storage.

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