TECHNICAL SPECIFICATIONS
PROCESSOR
Zilog Z80A @ 3.5 MHz
MEMORY
16KB or 48KB RAM
16KB ROM (BASIC)
GRAPHICS
256×192 pixels
15 colors (8 colors + bright)
Color clash limitations
SOUND
1-channel beeper
(Later models: AY-3-8912 3-channel)
STORAGE
Cassette tape (1500 baud)
Optional microdrive/floppy
DISPLAY
RF/Composite video output
32 columns × 24 rows text
EVOLUTION TIMELINE
1982 - ZX Spectrum 16K/48K
Launch of the original model with rubber keyboard. Price: £125 (16K) / £175 (48K). Became an instant success in the UK market.
1983 - ZX Spectrum+
Updated with a proper plastic keyboard, but same internals. Improved user experience and professional appearance.
1984 - ZX Spectrum 128K
Released in Spain first! Added 128K RAM, AY-3-8912 sound chip (3 channels), RGB output, and improved BASIC.
1985 - Sinclair Sold to Amstrad
Sir Clive Sinclair sells computer division to Amstrad for £5 million after financial difficulties.
1986 - Spectrum +2
Amstrad's first model with built-in cassette deck. Grey case design. Based on 128K architecture.
1987 - Spectrum +3
Replaced cassette with built-in 3" floppy disk drive. Final official model from Amstrad.
1992 - Production Ends
Official production ceases, but clones continued worldwide. Over 5 million units sold during its lifetime.
CULTURAL IMPACT
The ZX Spectrum wasn't just a computer—it was a cultural phenomenon that defined a generation. Sir Clive Sinclair's vision of affordable home computing democratized technology in Britain and beyond.
Impact on British Gaming Industry
The Spectrum birthed the British games industry. Bedroom programmers became legends: Matthew Smith, the Oliver Twins, Jon Ritman, and many others started their careers on the Spectrum. Companies like Ultimate Play The Game, Ocean Software, and Psygnosis all rose to prominence through Spectrum development.
Technical Innovation
Despite severe hardware limitations (color clash, single-channel beeper), developers created incredibly innovative games. The isometric 3D technique pioneered by Ultimate's Filmation engine influenced game design for decades. The ZX Spectrum proved that creativity could overcome technical constraints.
Worldwide Reach
While hugely successful in the UK, the Spectrum also dominated Eastern European markets and Latin America, where countless clones were produced. In Russia alone, millions of Spectrum clones were manufactured through the 1990s, creating a parallel gaming culture.