Casio Hl-809 Handheld Electronic Calculator

Description:

The case of this handheld electronic calculator is a cream-colored plastic on top and a black plastic on the bottom. The keyboard has an array of square brown plastic keys, including ten digit keys, a decimal point key, and a total key. Four keys for arithmetic functions are to the right of the digit keys. A column to the left has a memory key, a percentage key, a C (clear entry) key, and an AC (all clear) key.

The eight-digit yellow liquid crystal display is behind the keyboard. A tag behind it reads: CASIO HL-809 (/) ELECTRONIC (/) CALCULATOR. A switch is on the left side. The device has no power adapter or socket for one. The calculator was advertised as having the power go off automatically.

Text on the back of the case reads: CASIO HL-809 (/) RATING: DC 3V=0.00029W (/) use BATTERY 1.5Vx2 (/) MADE IN JAPAN (/) BM CASIO COMPUTER CO., LTD.

Two screws hold together the front and back of the case. Unscrewing them allows one to change the two AA batteries. (This example has no batteries.) A sticker on the inside of the back of the case reads: 1D307A. A mark on the NEC chip reads: NEC K11159 (/) D187IC.

An advertisement for a Casio HL-809 published in the Los Angeles Times March 18, 1982, gave a regular price of $8.95 and a sale price of $6.99. Another advertisement from the Washington Post in December of 1982 gave a sale price of $4.44. A March 1983 advertisement in the New York Times gives a clearance sale price of $4.99. As late as April of 1984 this model was advertised as regularly priced at $7.99 and on sale for $4.99.

Compare 1986.0988.027.

References:

Los Angeles Times, March 18, 1982, p. C6.

New York Times, March 17, 1983, p. A18.

Washington Post, December 3, 1982, p.B12.

Washington Post, April 5, 1984, p. A3.