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

Advertising:		"The 990-TWO"
			"990 ELECTRONIC CALCULATOR"


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