Appearance: Used
Functionality: Tested to Power-On Only

Description:
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As pictured, a Radio Shack TRS-80 Micro Computer System. Includes just the main unit – no other accessories are available. Unit powers on but no further testing performed – sold as-is.

Warranty and Returns:
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This product is being sold AS-IS without any warranty. Returns are not accepted. To ensure that this is the right product for your needs, we’re happy to answer any questions.

Shipping:
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- Other shipping methods are available – contact us for details.
- Combined shipping is available for most items – contact us for details.
- Local pickup is also available at no cost.

About Us:
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The Computer Preservation Group is dedicated to the preservation of historical computers. To help fund ongoing operations, select items are made available. To learn more, please visit our website. Thank you for your support!

Stock#:J0365.NUNDR#7


Details from https://en.wikipedia.org/wiki/TRS-80:

TRS-80 Model I
Manufacturer Tandy Corporation
Type Home computer
Release date August 3, 1977; 47 years ago[1]
Lifespan 1977–1981, 4 years
Introductory price US$599.95 (equivalent to $3,020 in 2023)
Discontinued January 1981; 43 years ago
Units sold
>100,000 (as of 1979)[2]
2.4 million (all models)[3]
Operating system TRSDOS, LDOS, NewDos/80, Level I BASIC
CPU Zilog Z80 @ 1.774 MHz
Memory 4–48 KB
Display Monochrome 12" CRT, 64 × 16 character semigraphics
Sound Square wave tones
The TRS-80 Micro Computer System (TRS-80, later renamed the Model I to distinguish it from successors) is a desktop microcomputer developed by American company Tandy Corporation and was sold through their Radio Shack stores. Launched in 1977, it is one of the earliest mass-produced and mass-marketed retail home computers.[4] The name is an abbreviation of Tandy Radio Shack, Z80 [microprocessor], referring to its Zilog Z80 8-bit microprocessor.[5]

The TRS-80 has a full-stroke QWERTY keyboard, 4 KB dynamic random-access memory (DRAM) standard memory, small size and desk area, floating-point Level I BASIC language interpreter in read-only memory (ROM), 64-character-per-line video monitor, and a starting price of US$600[1] (equivalent to US$3,000 in 2023). A cassette tape drive for program storage was included in the original package. While the software environment was stable, the cassette load/save process combined with keyboard bounce issues and a troublesome Expansion Interface contributed to the Model I's reputation as not well-suited for serious use. Initially (until 1981), it lacked support for lowercase characters which may have hampered business adoption. An extensive line of upgrades and add-on hardware peripherals for the TRS-80 was developed and marketed by Tandy/Radio Shack. The basic system can be expanded with up to 48 KB of RAM (in 16 KB increments), and up to four floppy disk drives and/or hard disk drives. Tandy/Radio Shack provided full-service support including upgrade, repair, and training services in their thousands of stores worldwide.

By 1979, the TRS-80 had the largest selection of software in the microcomputer market.[6] Until 1982, the TRS-80 was the bestselling PC line, outselling the Apple II by a factor of five according to one analysis.[5] The broadly compatible TRS-80 Model III was released in the middle of 1980. The Model I was discontinued shortly thereafter, primarily due to stricter Federal Communications Commission (FCC) regulations on radio-frequency interference to nearby electronic devices.[7][8] In April 1983, the Model III was succeeded by the compatible TRS-80 Model 4. Following the original Model I and its compatible descendants, the TRS-80 name became a generic brand used on other unrelated computer lines sold by Tandy, including the TRS-80 Model II, TRS-80 Model 2000, TRS-80 Model 100, TRS-80 Color Computer, and TRS-80 Pocket Computer.