Timex/Sinclair 1000 was available in store to the beginning of the Eighties for approximately $150. It was really the first micro-computer at an accessible price. Its weight was only 12 ounces. It had the dimension of a large computer and came with 2K from read-write memory. It used your television set as monitor. The programs and data were to be safeguarded on a cassette with a tape recorder. It is a mica affixed directly on the mother chart which replaced the keys.

 

Imagine a computer with only 2K of read-write memory and any hard disk nor operating software.

 

We could buy programs on cassettes like: space invader, chess, labyrinth etc. All these programs were in language BASIC. It was absolutely necessary to have the extension of 16K to make function this software. Each cassette cost approximately $25.

 

It was sold also several books and reviews with programs in BASIC which we must type and make function on the computer and then to safeguard them on a cassette.

 

At that time Timex/Sinclair 1000 was the computer more sold throughout the world exceeding all the other put marks sets.

Thereafter an extension of read-write memory of 16K arrived which one connected with the back of the computer. Also a small printer with thermal paper similar to the old paper of fax was added. These modules were very expensive but increased largely the capacity of the computer.