*[[Zilog]] [http://www.zilog.com]
*[http://www.z80.info Home of the Z80 CPU]
*[https://www.computerhistory.org/collections/oralhistories/ Oral histories history collection]: [https://www.computerhistory.org/collections/catalog/102658073 Zilog Z80]
*[http://en.wikipedia.org/wiki/Z80 The Z80 processor on Wikipedia]
*[https://sinclair.wiki.zxnet.co.uk/wiki/Z80 Z80 article on Sinclair Wiki]