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Heathkit H11

Heath Co. (USA)

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Name Heathkit H11
Manufacturer Heath Co. (USA) Type Desktop
Production start (mm-yyyy) 1977 Production end (mm-yyyy) -
RAM 8-64Kb ROM
CPU DEC LSI-11/2 16Bit - 2.6 Mhz
Operating System
Text (Cols x Rows)
Storage memory Floppy 5.25" or 8" 256Kb (H-27), paper tape reader, tape
Serial port 1 Parallel port 1
Others port 7 LSI slots
Original price   Currency original price 1295 USD
Units sold
Note In the Q-bus the highest 8KB addresses are reserved for devices. Thus, the system can contain at most 56k of real memory.

The processor (lsi-11/2) ran at a 380 nanosecond average cycle time which is approximately 2.6 Mhz. This was relatively fast compared to its parent the PDP-11/20 minicomputer(1970) which because of its magnetic core memory ran at a 800 nanosecond cycle time.  
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