Tech Info

Tech Specs

Dimensions: 26x33x44 inches
Weight: 740 lbs
Power: 1500W max at 100-130VAC 60Hz
Word Size: 31 bits including sign
Memory: Magnetic Drum of 4096 words + 3 recirculating registers
Instructions: 16 (including HW multiply & divide)
Access Time (varies by drum position): optimum 2.34mS, pessium: 16.66mS
Tubes: 113
Diodes: 1450 (sources vary and I haven’t counted)
Module Cards: 34
Std I/O: Friden Flexowriter model FL (weight: 90 lbs) running at 10 CPS.

More on components, instructions and controls in this original Librascope Brochure.
The Programming Manual can be found at Ed Thelen’s site Here.

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Note: Under normal conditions the LGP-30 makes use of only bits 1-4 of the below codes.