How to read fortran punch card

Like Loading... This is apparently what led to some accounts claiming that the cards had eight rows instead of twelve.

how to read fortran punch card

They are also disposed symmetrically along the width of the card, so this leaves 0. When cards are stacked and stored, they will take up slightly more space.

how to read fortran punch card

The rows, on the other hand, are significantly offset towards the bottom of the card, very nearly enough to allow for a thirteenth row of holes on the top to make the positions of the rows symmetric.

The spacing of the holes, both vertically and horizontally, is 0.

The Punched Card

Or it could remain an 80-column card, but with 32 bits per character. I have even seen mentions of a 160-column card, presumably derived from the 80-column card in the same fashion.

how to read fortran punch card

A column width of 0. The cards, pictured on one web site, were quite unique: The 80-column card is, of course, what people generally think of as a punched card.

Punched Cards

Leave a Reply Cancel reply Enter your comment here... Notify me of new comments via email. It would of course have been possible to increase the size of the card to accommodate lowercase characters, or an extended character set, but that might have impacted the structural integrity of the card, and may have required making a thicker card.

Many other types of punched card, of different shapes and sizes, have been used.

Read your own punch cards

This example still uses the same codes for the digits 0 through 9, and the principle of distinguishing between zone and digit punches is still applied, but 3 is treated as a zone punch as well as 12, 11, 0, 8, and 9. The 65-column card was extended to a 130-column card through the same double-row technique that was used to turn the 45-column card into Univac's famous 90-column card. This gives a range from 0. And as I learned from a paper by Eric Fischer the code used for representing the 26 letters of the alphabet by punching two holes in a column was shown in a patent for a printer to be used in a card-based accounting machine, applied for in 1932, and granted in 1935, U.

Living like the pioneers! Code FORTRAN in a punch card!

Because the 21-column card had generous margins on the left and right, that could have also been true of the 36-column card. This Fortran card has 80-columns, and shows clearly the 7 columns of the fixed formatting.

Punch Card Programming - Mainframe Computers

The videodisc, providing constant angular velocity, and not modulating the groove by moving it from side to side, but keeping its path constant, and varying its depth, has similarly been termed a vindication of the Edison Phonograph over the Berliner Gramophone. What I suspect is that the spacing of columns of holes was 0.

how to read fortran punch card

But, then, I only saw 80-column cards in actual use in one place, which happened to have chosen to use IBM computers, so that is not really a fair measure of the popularity of computers from the Univac division of Remington Rand.

Of course there were many different types of cards as well. Columns 4, 5, 6, and 7 of punches occupy the same space across as printed characters 3, 4, and 5 in a row... It also had eleven rows of holes.