PDP-4

Product

An 18-bit machine that followed the PDP-1, though not directly compatible. It featured 8 kilobytes of memory by flipping an address bit to an instruction bit.

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Videos Mentioning PDP-4

Hacking on the PDP1 Raspberry Pi Emulator - Computerphile

Hacking on the PDP1 Raspberry Pi Emulator - Computerphile

Computerphile

An 18-bit machine that followed the PDP-1, though not directly compatible. It featured 8 kilobytes of memory by flipping an address bit to an instruction bit.