~ Quantity 2 ~
Genuine “IBM” Computer Punch Cards
Made by IBM...Not second sourced cards
(See 2nd Photo)
From the 60’s – More than 50 years old
“Introduced in 1928, the IBM computer punch card has 80 columns and 10 rows
for coding numbers. Data is assigned to the card by punching holes, each one
representing a character, in each column. When writing a program, one card
represented a line of code — about 80 bytes in total — so large stacks of the cards
were required. To load the program or read punched card data, each card would
be inserted into a punched card reader to input data into a computer.”
NOTE: Many companies produced Computer Punch Cards.
Unless it says "IBM 5081" on the bottom, they are not a genuine IBM product.
(IBM = International Business Machines)
You get Two Genuine “IBM” cards with each Buy It Now
~ US Stock…Fast USA Shipping ~