IBM 101


The IBM 101 Electronic Statistical Machine, introduced in 1952, combines in one unit the functions of sorting, counting, accumulating, balancing, editing, and printing of summaries of facts recorded in IBM cards.
The 101 could sort cards based on multiple columns. For example, if a card had multiple 3-column test scores, the 101 could be wired to sort into pocket 0 those cards with no scores over 090, into pocket 1 those with one score over 090, and so on; logic limited only by the number of relays available.
A. Ross Eckler suggests the development of the 101, with functions similar to earlier multicolumn sorters and unit counters developed by the Census Bureau, "was apparently a direct result of the transfer to IBM of Lawrence Wilson, who had served as chief of the Census Bureau's Machine Tabulation Division".

Functions

The following operations may be performed at the rate of 450 cards per minute:
The operation of the 101 is directed by the use of a removable control panel.

Related Equipment

IBM Devices often used in conjunction with an IBM 101 included:

Capabilities table

IBM 524

The IBM 524 is a Duplicating Summary Punch, and two of them can be attached to an IBM 101.

Other units

The term gangpunch refers to duplicating the content of a punched card onto one or more of those that follow - to copy information from a master card into the following detail cards.