Specifications for Monroe 990
Manufacturer: Monroe International Division, Litton Business Systems Model Number: 990 Serial Number: S110675 Date of Manufacture: Mid-1970 Manufactured In: Japan (Canon) Original Price: $1250 Weight: 17 Pounds Size: 12" Wide, 15" Deep, 6" High Power Requirement: 17 Watts, 115VAC Display Technology: Nixie Tube, 16 NEC CD-71 tubes, RH Decimal Point Discrete Neon "Comma" and Status Indicators Logic Technology: 170 Small Scale Integrated Circuits DTL TI SN39xx and SN45xx-series Eight Plug-in Circuit Boards Magnetostrictive Delay Line Register Storage (made by NEC) Digits of Capacity: 16, No zero-suppression Decimal Modes: Fixed, Selectable at 0, 2, 4, 6, 8 or 10 digits Arithmetic Logic: Arithmetic Math Functions: Four Function, Square Root Constant: Yes, Multiply and Divide Memories: 2, with in-use indicators Memory Register 1 accumulator for all operations Memory Register 2 operates as counter, accumulator, or sum-of-products register, with M+/M- keys. Other Features: Truncate/Force Up/Round Switch Selectable
Previous Machine: Denon DEC-311 Next Machine: Sharp QT-8D Related Machines: Monroe 950 Canon 141 Canon 164P Monroe 920 Monroe 620 Canon L163 Advertisement: "The 990-TWO"
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