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Inside a Classic: The TRS-80 Model 100

Instant-on, with a comfortable keyboard and 20 hours of battery life: Little wonder this Radio Shack model is one of the most popular portables of all time. We offer a look at the guts of this featherweight champion.

Benj Edwards, PC World

The CPU Revealed 9 of 16

The Model 100's brain, an 8-bit 2.4 MHz 80C85 CPU, is a simplified, low power version of the 8080 manufactured by OKI.

The unit's RAM modules store both run-time program data and battery-backed user file storage. This unit originally shipped with 24 kilobytes of RAM and was expanded to 32K via an open socket.

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