Honeywell 400 Series Hardware Manual page 10

1. GENERAL INFORMATION
o Read at variable speeds (asynchronous).
0 Check for the presence of invalid characters.
Card punching equipment permits information from the central processor to be recorded
directly on cards under control of a stored program. Punching speeds from 100 to 300
cards per minute are available.
Card punches are designed to:
0 Punch cards in alphanumeric or 12-row binary formats.
0 Punch cards row by row, 80 columns at a time.
0 Check card feeding
0 Check punching accuracy by a read-after-punch hole count.
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