DO NOT MISS

Ads

Monday, 25 April 2016

WHAT IS THIS- IMAGE -3


PUNCH CARDS

Input was based on punched cards in first generation computers.


Punch cards also known as Hollerith cards and IBM cards are paper cards containing several punched holes that were punched by hand or machine to represent data.

These cards allowed companies to store and access information by entering the card into the computer.

The picture is an example of a woman using a punch card machine to create a punch card.

How did punch cards work?
Using a punch card machine like that shown in the picture above, data can be entered into the card by punching holes on each column to represent one character.


The standard punched card, originally invented by Herman Hollerith, was first used for vital statistics tabulation by the New York City Board of Health and several states.

After this trial use, punched cards were adopted for use in the 1890 census. 




Chao Xing said...

This is a blog to watch for sure. I think you have a really awesome writing style by the way. Very easy to read. Your blog design is so clean too! Thank you all the hard work! Face Recognition

Technogeekscs said...

Your info is really amazing with impressive content. Excellent blog with an informative concept. Really I feel happy to see this useful blog, Thanks for sharing such a nice blog. Punch Card Machine

Babit said...

This is most informative and also this posts most user-friendly and super navigation to all posts.
IP Camera Singapore

Greataims

 
Copyright © 2016 Computersadda. Designed by @ Computersadda Team - Published By Greataims