*[[Zilog]] [http://www.zilog.com]
*[http://www.z80.info/z80cs.htm Computer Systems based on Home of the Z80 FamilyCPU]
*[http://en.wikipedia.org/wiki/Z80 The Z80 processor on Wikipedia]
*[https://sinclair.wiki.zxnet.co.uk/wiki/Z80 Z80 article on Sinclair Wiki]