We found this 2"x3" box of 1980s chips in a collection that was donated. They were important enough to the original owner to protect with anti-static foam.
The large chip at the top left is an Intel 8-Bit 8051 CPU with UV erasable memory.
The chip at the bottom middle is an SGS 8Kx8-bit UV erasable memory.
The chip at the bottom middle right is an Analog Devices True RMS-to-DC Converter.
The next chip to the right is an Optek Four Channel Low Input Current Optocoupler.
The chip at the far right is a Cypress CMOS Flash Erasable Programmable Array Logic device.