1. The relays were operated by electrical impulses initiated by a punched tape . 2. The system accepted input on punched tape produced by a Friden Flexowriter. 3. Beginning in 1957 the Z11 could be programmed by punched tapes . 4. Peripherals included punched tape readers, punched card readers, and line printers. 5. The punched tape served not only for data entry, but also as memory storage. 6. The figure groups between which differences were to be made were on punched tape . 7. Flowers designed shift registers one for each of the five channels of the punched tape . 8. Various offline input / output included magnetic disks, tape drives, punched cards, punched tape and printers. 9. In-and output was done by teleprinter, punched tape and punched cards, output also by a type-printer. 10. Peripheral equipment ( Punched tape ) 3.
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