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DEC: System Building Block
model number 4509 stamped on front
level standardizer 1502A written on circuit board end
serial number 0137536 stamped on side
level standardizer 1502A written on circuit board end
serial number 0137536 stamped on side
DEC: System Building Block - backplane
Bare backplane for connection of System Building Blocks including power connectors. Label applied to back reads '901 Model 2/26/61'. Sticker applied to front reads 'O.K. Inspected by (DLC in pen) Date: (9/12/61 in pen) Digital Equipment…
DEC: System Building Block - Flip Flop
System Building Block in enclosure
Flip-Flop 3201 marked on front; number stamped '13006' front top.
circuit board marked FF 3201-E 00644
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
Flip-Flop 3201 marked on front; number stamped '13006' front top.
circuit board marked FF 3201-E 00644
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
DEC: System Building Block - Inverter
System Building Block in enclosure
Inverter 3101 marked on front; number stamped '21236' front top.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
Inverter 3101 marked on front; number stamped '21236' front top.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
DEC: System Building Block - Pulse Generator
System Building Block in enclosure. Pulse Generator 3410 marked on front; number stamped '18418' front top.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.
'Digital Equipment Corporation Maynard Massachusetts' marked on back.