Z-80 SoftCard
| Developer | Microsoft | 
|---|---|
| Release date | April 2, 1980 | 
| Operating system | CP/M | 
| CPU | Z80 | 
| Platform | Apple II | 
| Successor | Premium Softcard IIe | 
The Z-80 SoftCard is a plug-in Apple II processor card developed by Microsoft to turn the computer into a CP/M system based upon the Zilog Z80 central processing unit (CPU). Becoming the most popular CP/M platform and Microsoft's top revenue source for 1980, it was eventually renamed the Microsoft SoftCard, and was succeeded by Microsoft's Premium Softcard IIe for the Apple IIe.