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My Final Year at Singapore Polytechnic

woon yew thong S-100 personal computer Z80

Around Apple 2 personal computer era

1979 - On my final year at Singapore Polytechnic, I decided to build my own computer system.
Based on S-100 architecture and using a popular CPU at that time - Z80.

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80

woon yew thong S-100 personal computer Z80
Data input via mechanical ON - OFF switch and powered by a 10 ampere A.C. Transformer.

woon yew thong S-100 personal computer Z80
1979 - Building my own personal computer

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