Olympia CD46

		Home New Stuff Author Links Guest book Web-log	Adverts Bric-a-brac Calculators Components Ephemera Events	For Sale Glossary History Hit or Miss Radios Transport	Ultra Valves Wanted Metal Puzzles Clocks

Calculators: Handheld: Olympia CD46

	Size (approx):	70mm x 118mm x 21mm (w,h,d) Weight 94g excluding batteries
	Power:	3.0V DC, 2 x AA size batteries, 0.4W. It accepts an adapter (undefined) through a socket on the top side to the far left. Alkaline battery lifetime is quoted as 18 hours.
	Case:	Compact two-piece black smooth plastic case with grip ridges on the sides. Large front brushed aluminium panel is slightly raised and printed black. The display has a flat, slightly recessed, neutral filter and small grey escutcheon. Subtle coloured keys are soft and squishy and have Casio-like surrounds. The on/off switch is on the left side, in line with the display. The back has a recessed panel embossed with “name” for you to put your own sticker in.
	Display:	8 digit blue VFD, with a ninth digit for minus, error and memory indicators
	Features:	4 function calculator with percentages, register exchange, square roots, sign change and four function memory
	Age:	1976
	Manufacturer:	Olympia Werke AG, Wilhelmshaven, Western Germany, made in Japan. Serial number on the inside of the battery cover is 0046355.
	Comments:	Very high quality feel to this compact and pretty calculator. It appears to be a branded Panasonic (Matsushita) model as it is very similar to calculators like the Panasonic 8003. The logic is fine but the lack of recovery is a pain. Original case is soft black plastic with open top and Oympia embossed on the front.

Components:	1 x cpu: NEC uPD278C H5Z426, 28 pin DIL 0.6" width 1 x 9 digit VFD single tube flat face: Futaba 9-ST-20A 6D (April 1976?) 2 x transistors 5 x diodes 6 x capacitors 2 x resistors 1 x resistor array 1 x transformer: ST-1000 Sumida
Boards:	The keyboard board is fixed to the front by a dozen plastic rivets. It connects to the main cpu board (ref D 6700) via a 15-way ribbon cable and sits lose on top of the keyboard.
Construction:	Remove the single screw from the back and gently lift off the rear section.

Logic comments:	The (C) button is used to clear last entry of a number and a second press clears the whole calculator.
	Input overflow is suppressed, inputting a ninth digit is ignored
	There is automatic constant on multiply and divide only
	Negative numbers are shown by a "-" in the far left (ninth) digit thereby allowing full eight digit negative numbers
	The change sign function can be used in mid number entry
	An overflow shows the result with a “C” (or “E” if negative) in the far left (ninth) digit and is not recoverable
	Divide by zero results in a tall "C” in the far left (ninth) digit and is not recoverable.
	Negative square roots are not allowed and give a "C" in the far left (ninth) digit and is not recoverable
	(R) acts as a register exchange, swapping the last number for the one just entered
	Memory store is indicated by the decimal point of the far left (ninth) digit.

	The manual measures 75mm x 105mm and has 28 pages in black and white only. Instructions are given in German, English, French and Spanish along with quite a few examples. The thin paper can be seen from the "print-through" easily seen on the scan to the left. Reference: 1/72/109/04 Printed in Japan, Modifications reserved, YLEE76045600.