LOGOS I 8K Static RAM S-100 Memory Board Altair IMSAI 8080

Rare Seals Electronics 8k Static RAM Memory Board S-100 Board IMSAI Altair 1976

Rare SD Systems 4K Static RAM Board 1976 S-100 Board ( ALTAIR,IMSAI,CROMEMCO) #3

1977 IMSAI Altair 16K Static RAM Memory Industrial Micro Systems S-100

Vintage S-100 1976 S.D. Sales RAM Memory w/ Synertek Chips IMSAI 8080

Early Revision 1977 TRS-80 Model 1 26-1001 Computer Serial #002336 - Tested

Z80 computer based on Z80ctrl hardware

Retro Godbout Econoram II Memory Board for Altair S100 Bus Computers. Z80, 1977