Electronic Systems with Ferrite Memory Blocks,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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In modern digital computers, ferrite core memories are generally used as the ready-access storage. Recent advances in ferrite core production make it possible to design memories with an operating cycle of 1 msec or less and a capacity of tens of thousands of words. The generally-used coincidence system makes greater demands on the cores, but gives great system economy over systems with linearly selective memories. The UMC-10 general-purpose digital computer developed in the Department of Computer Design of the Warsaw Polytechnical Institute uses a ferrite memory 4092 forty-bit words, coincidence system as the rapid-access storage. The present article is limited to a description of the systems which actually control the memory operations, i.e., the switching current generator, the address-selecting system in the storage plate, the readout amplifier channel, the record-readout switch, and the recording forbid current generator. A schematic diagram of the memory and electronic systems is given in a figure.
- Computer Hardware