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General| Manufacturer | Radio Shack |
|---|---|
| Model | TRS-80 Model 3 |
| Category | Desktop |
| Release Year | 1980 |
| CPU | Zilog Z80 |
| CPU Speed | 2.03 MHz |
| RAM | 4 KB (expandable to 48 KB) |
| ROM | 12 KB |
| Display | Monochrome CRT |
| Operating System | TRS-DOS |
| Power Supply | Internal |
| Storage | 5.25-inch floppy disk |
| Ports | Cassette port |
| Weight | 20 lbs |
| Display Resolution | 64 x 16 characters |
Instructions for unpacking the computer and connecting peripherals.
Guides users through the power-on sequence, system startup, and modes of operation.
Covers how to redirect I/O between different devices for program versatility.
A guide to common operating problems and their solutions.
Reference guide for BASIC commands used to control the computer.
Details on statements for data transfer between devices and programs.
Covers statements for defining variables, controlling program flow, and tests.
Explains string handling capabilities, functions, and memory usage.
Discusses array definition, usage, and matrix manipulation subroutines.
Describes intrinsic functions for performing mathematical operations.
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