Hugo Holden
Veteran Member
I thought it would be worth posting this. I have seen some large logic boards in my time, the original Pong arcade board was pretty big, 60 or more TTL IC;s, then in 1974 Atari (and Kee Games) came out with the arcade Tank game. It had so many TTL IC's they could not fit on the one board at the time, so they broke it up into two boards with a multi-jumper between the two as they could not make a pcb in a single bath big enough for the 150 or so IC's.
Tonight, I stumbled across a pcb on ebay, some sort of processor for CNC lathe control. It must be "the mother of all logic boards" or computer boards, at a rough count there are about 500 IC's on the pcb ! !
https://www.ebay.com/itm/23263415149...IAAOSwbP1aX82r
Imagine fault finding this pcb if an IC failed. You would have to be familiar with the entire design to be efficient at repairing it, it is astonishing. I guess a lot of the packages are memory, but even so.
Tonight, I stumbled across a pcb on ebay, some sort of processor for CNC lathe control. It must be "the mother of all logic boards" or computer boards, at a rough count there are about 500 IC's on the pcb ! !
https://www.ebay.com/itm/23263415149...IAAOSwbP1aX82r
Imagine fault finding this pcb if an IC failed. You would have to be familiar with the entire design to be efficient at repairing it, it is astonishing. I guess a lot of the packages are memory, but even so.