Sinclair Cambridge
The first of the very small Sinclair Cambridge series, introduced in Summer 1973. This one is a Type 3.
Sinclair Oxford 300
Sinclair Oxford 300, Type 2 introduced in 1975. A nice example in it’s original box with manual.
Sinclair Enterprise
Introduced in 1977, this calculator uses the General Instruments C689G chip. Battery is a PP3, changed by removing the whole of the top cover.
Mr Woodvine's Old Computer Page 