This ist a central collection of datasheets from microprocessors, ic's and transistors from home computers.

The IC of the 74 series (7400, 74157 etc) can be found under "74xx Data Collection"
the microprocessors can be found in the "cpu" subfolder

Further data sheets:

Transistor data sheets, often with comparison types
Comparison lists and overviews
Special IC, such as the SAA1099 sound chip from the SAM Coupe
RAM Components