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TRS-80

The TRS-80 Micro Computer System (TRS-80, colloquially known as the "Trash-80", later renamed the TRS-80 Model I to distinguish it from its successors) is a desktop microcomputer developed by American company Tandy Corporation and sold through their Radio Shack stores. Launched in 1977, it is one of the earliest mass-produced and mass-marketed retail…

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CPU
Zilog Z80 @ 1.774 MHz
Discontinued
January 1981; 45 years ago (1981-01)
Display
Monochrome 12" CRT, 64 × 16 character semigraphics
Introductory price
US$599.95 (equivalent to $3,190 in 2025)
Lifespan
1977–1981
Manufacturer
Tandy Corporation

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Overview

History

Hardware

Peripherals

Software

Reception

Compatible successors

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Map overview Semantic statistics

TRS-80

Nodes204
Edges203
Triples335
Avg. degree1.99
Density0.009804
Components1

How this topic connects Entity context

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TRS-80

Top relations

related to Delivery · 35
TRS-80 → Adam Osborne, Apple Computer, Boston, By, Byte, Centers, Commodore, CPU/keyboard, December, French, Hundreds, InfoWorld, Kilobaud Microcomputing, Leininger, Little Computers, More, November, Radio Shack, Roach, Selling
related to Model III · 29
TRS-80 → Computers, CPU, DOS, DRAMs, FCC, January, July, KB, KB RAM, MFM, MHz, Model, Model II, Model III, Model III's, RAM, RS-232, Shortly, Tandy, Tandy/Radio Shack
related to External links · 21
TRS-80 → Archived December, California, California Digital Library, Computer History Museum, Guide, II, Ira Goldklang's TRS-80 Revived, Javascript, LDOS, Model III BASIC, Online Archive, Radio Shack, Radio Shack Catalog Archive, Radio Shack Model, RSC-3trs-80, SiteTRS-80 Model, Technical ReferenceLDOS, The North West TRS-80, User ManualByte, USers Group MagazinesTRS-80 Emulator
related to Hard drive · 21
TRS-80 → An, DDIR, DiskDISK, DSK, It, Later, Like, Logical Systems, MB, Model II, Model III/4, Model I's E/I, OS, Radio Shack, The, The LDOS, To, TRS-80 Model III/4, Up, US
related to Model 4 · 19
TRS-80 → April, CP/M, It, KB, KB RAM, Level II BASIC, MHz, MHz CPU, Model, Model III, Model III's, RAM, RS-232C, Tandy, The, The Model, There, TRS-80 Model, Z80A
related to Model I Expansion Interface · 19
TRS-80 → Centronics, E/I, Expansion Interface, I/O, KB, Leininger, Model, Only, Optionally, Radio Shack, RAM, RS-232, S-100, Standard, Tandy-proprietary Expansion Interface, The, The TRS-80, VOXBOX, Z80-based
related to Reception · 18
TRS-80 → April, As, Byte, CP/M, Dan Fylstra, He, It, Jerry Pournelle, July, May, Omikron, Pournelle, Radio Shack, Tandy, Tandy's, The, Three, TRS-80 Model
has application · 17
TRS-80 → Apple, Blackjack, Broderbund, Dealers, Doug Carlston, Green, I'm, Its, Micro, Radio Shack, Radio Shack's, Sadly, September, Shack, Tandy, The, They
related to Cassette tape drive · 17
TRS-80 → Automatic, CTR-41, Green, Hal Chamberlin, It, Leininger, Leninger, Micro, Radio Shack's, Tandy, Tarbell Cassette Interface, The, Then, To, US, User, Users
related to Keyboard · 16
TRS-80 → Alps Electric, BASIC, Dirt, Keyboard, Level, Level II BASIC, Micro, Model, Model III, Model III's, Tandy, Tandy'sKBFIXutility, The, The Alps, The TRS-80 Model, Wayne Green's

Important terminology Word statistics

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Important terminology

model radio shack basic tandy iii computer disk software trsdos drives ii level keyboard kb also floppy cassette drive interface

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
TRS-80CPUZilog Z80 @ 1.774 MHz1.00infobox
TRS-80DiscontinuedJanuary 1981; 45 years ago (1981-01)1.00infobox
TRS-80DisplayMonochrome 12" CRT, 64 × 16 character semigraphics1.00infobox
TRS-80Introductory priceUS$599.95 (equivalent to $3,190 in 2025)1.00infobox
TRS-80Lifespan1977–19811.00infobox
TRS-80ManufacturerTandy Corporation1.00infobox
TRS-80Memory4–48 KB1.00infobox
TRS-80Operating systemTRSDOS, LDOS, NewDos/80, Level I BASIC1.00infobox
TRS-80ReleasedAugust 3, 1977; 49 years ago (1977-08-03)1.00infobox
TRS-80SoundSquare wave tones1.00infobox
TRS-80TypeHome computer1.00infobox
TRS-80Units sold>100,000 (as of 1979)1.00infobox
TRS-80Units sold2.4 million (all models)1.00infobox
TRS-80is alot of computer for the money0.90text

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