IBM 1442

Overview

Models

Reader/Punch models

• The 1442 Model 1 read cards at 80 cards per minute and punched at 50 to 270 cpm, depending on the number of columns punched. One stacker was standard and a second was optional.
• The 1442 Model 2 read cards at 400 cpm and punched from 91 to 360 cpm. Two stackers were standard.
• The 1442 Model 6 attached to an IBM System/3 or IBM 1130, read 300 cpm and punched 80 columns per second.
• The 1442 Model 7 attached to an IBM System/3 or IBM 1130, read 400 cpm and punched 180 columns per second.

  Reader models

• The 1442 Model 3 attached to an IBM 1410 or IBM 7010 computer system. It read cards at 400 cpm. The punch speed was not specified. One stacker was standard on the Model 3.
• The 1442 Model 4 attached to an IBM 1440 computer system. It read cards at 400 cpm, and, like the Model 3, had no punch feature.

  Punch only

• The 1442 Model 5 was a punch-only device that attached to an IBM 2922 Programmable Terminal. It had one stacker and could punch at a maximum rate of 91 cpm.

  2501/1442 combination

• Maximum input speed is 400 cards per minute
• The 1442 needs attention for every column of data.

• faster input
• the 2501 is buffered/doesn't need attention per column.