Honeywell
Series 400/800
1967-1965
HISTOIRE |
HISTORY |
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Honeywell entered the computer
field by taking minority interests (40%) in Datamatic co-founded with
Raytheon in Newton and Waltham, MA The line gave place in 1963 to the H-200 product line. It has to be noted that the license agreements with NEC were initiated with the H-400/H-800 product line. |
modčles d'ORDINATEURS |
COMPUTERS |
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Datamatic 1000 was a vacuum tubes
computers developed in 1956. It originated the 48-bits architecture used
on Honeywell Series 400 and 800. Seven systems had been delivered in
1957 prior than acquisition by Honeywell.
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The Honeywell 400 was a general
purpose computer delivered in 1960
Architecture: 48-bits (+2) words, Software included: Performances add 111 µs, multiply 1591 µs, divide 5574 µs [performance evaluated to 6 KOps] Technology main memory was using
magnetic cores |
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Honeywell 1400 |
The Honeywell 400 is an evolution of
H-400. It was introduced in 1963 Its main memory is extended to 32K
words. |
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H-800 was a transistors technology
system. 48-bits (+2) words, that may
contain 4 decimal digits signed or unsigned or 8 alphanumeric characters Co-routines handling was implemented by using two instruction counters and return address registers. Each program had a total of 32 registers (among which 2 program counters, 2 return address history registers, 8 indexes, 1 base address, 1 mask index, 12 general purpose registers) I/O were handled under control of up to 16 controllers using a data chaining feature (scatter-gather). This machine implements eight virtual processors, each having 2 program counters and an individual interrupt vector base register. On each memory cycle the hardware scans on a priority basis for activity on eight input controllers, then eight output controllers, and then the CPU. Within the CPU the hardware scans the virtual processors in a cyclic manner (with various exceptions for multiple memory cycle operations). |
Honeywell 1800
Honeywell 1800 |
The Honeywell 1800 was announced in 1962, delivered in 1964 48-bits (+2) words, that may
contain 4 decimal digits signed or unsigned or 8 alphanumeric characters
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Honeywell 1800-II |
The H-1800 and H-1800-II, are
identical except that the H-1800-II includes an Input/Output Control
Center. This IOCC is capable of controlling one card reader, one card
punch, one high-speed printer and four magnetic tape units. All of these
peripheral units may be operated simultaneously, either on-line with the
central processor or off-line, in any combination of operations.
Complete buffering allows Read/Write/Compute overlap. |
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Honeywell 8200 |
Announced in 1965, H-8200 was the
last model of the H-800 line.
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