ICT 1301 - Standard Peripherals

Standard Peripherals

The card reader was capable of reading 600 cards per minute, each with 80 columns containing one character or a space.

The card punch could punch 100 cards per minute, again each card had 80 columns containing one character or a space.

The line printer could print 600 lines per minute. It used a print barrel made up of 120 print wheels each with 50 characters around its edge. Each of the 120 print positions had a print hammer which when fired squeezed the paper and an inked ribbon between itself and the rotating print barrel for a fraction of a second. It is reputed to be the first commercially produced barrel printer.

The drum could record 12,000 words of data. It also had 400 words of 'reserved' storage where the computer's bootstrap program (called Initial Orders) was stored. Up to 8 drums could be attached. Average access time was 5.7 ms.

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