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| Released in May 1978, the Sharp MZ-40K was the first computer in Sharp’s MZ series. Marketed as a build-it-yourself kit, it targeted electronics hobbyists and students with a focus on learning and experimentation. The MZ-40K was based on a 4-bit Fujitsu MB8843 CPU running at approximately 1.79 MHz. It featured a 22-key keyboard combining hexadecimal input and musical notes, four 7-segment LED displays, and a small internal speaker capable of playing simple melodies. There was no built-in or external storage—programs were lost when the power was turned off. However, the computer included a built-in timer and could be expanded with optional accessories such as a sensor module (for detecting light, water, or switch inputs) and a musical keyboard for composing short tunes. |
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