Casio Mini Card LC-78
Casio Mini Card LC-78
Display is 8 digits, yellow LCD.
4-function, %, memory.
Integrated circuit - NEC D896G3 (here date coded 1978).
Batteries - 2x AG10 Silver button cells.
Credit card size (but a little thicker) - 91 x 55 x 5 mm (3.6 x 2.2 x 0.2").
Was the first credit card sized calculator (though a little thicker), introduced in 1978. Cost £17 Sterling (about US$34).
Made in Japan.
By 1978 the use of LCD (Liquid Crystal Display) and C-MOS (Complementary Metal Oxide Semiconductor) integrated circuits with their very low power consumption allowed the production of a very small and thin calculator powered by two button cells giving a quoted life of 1000 hours. See the bottom of this page for a comparison with one of the first hand-held calculators, the Sharp EL-8.
