SINCLAIR ZX SPECTRUM CODE
SINCLAIR ZX SPECTRUM TV

I confess, although I'm a bit older, I don't belong to the generation of Sinclair ZX Spectrum owners.

SINCLAIR ZX SPECTRUM CODE

MC) printed the listings at that time, so that you could type in the program code yourself using the rubber keys. This led to the later availability of not only games, but also word processing, databases, various programming languages, assemblers and debuggers. A 16 KByte ROM contained a BASIC interpreter, so people could program immediately. The ZX Spectrum had a small speaker for sound output. A baseband video signal is also available at the extension port and could be taken and amplified with external hardware.

SINCLAIR ZX SPECTRUM TV

As an output device, a TV set is usually connected via the antenna input. The frame color can be selected separately from 8 colors. In addition, the colors of a block can be brightened or blinked. In each block, the foreground and background color can be selected from 8 colors. For the color representation, 8 × 8 pixels are combined into blocks, so that effectively only a color raster of 32 × 24 blocks is available. The graphic resolution is 256 × 192 pixels. About the graphics output, Wikipedia writes. The screen output, the sound output and the connection to the cassette recorder as memory was done by a special ULA device. For the RAM components, defective memories were used in the 48 KByte version, where the defective memory banks were then blanked out, Wikipedia knows. The device was, like its predecessor, trimmed to cheap – compact housing, rubber keyboard and TV set as well as cassette recorder for storage had to be provided by the user. Sinclair ZX Spectrum, Bill Bertram CC BY-SA 2.5 Hardware expansions can be connected via a slot. A commercially available cassette recorder is connected for storing data. The device had a graphics output of 256 × 192 pixels in 15 colors. The 16 KB versions could later be expanded to 48 KB by adding RAM. The calculator had 16 or 48 KB of RAM and 16 KB of read-only memory (ROM). The processor was a Zilog Z80 (Z80A with 3.5 MHz).

The Sinclair ZX Spectrum came probably in Great Britain at a price of 125 £ or 175 £ on the market and was the successor of the Sinclair ZX81. For more my time was not enough at that time. But at that time I got a rough idea of the developments in the field of home computers from home computer magazines. It was a hot time, where I programmed in Assembler, Fortan and PL/M very close to the hardware and learned a lot. At that time I was professionally programming microprocessor systems with the Intel 8085 processor for the chemical industry, for measurement, control and regulation. It was April 23, 1982, when the Sinclair ZX Spectrum 16/48k was introduced as a home computer.

Sinclair zx spectrum