How it was: Paper tapes and punched cards

نویسنده

Clive Maxfield

چکیده

Perforated paper products As you can imagine, it would be somewhat inconvenient to have a computer that forgot everything it knew if its operator turned it off before stepping out for a bite of lunch. Similarly, imagine a programmer's frustration if, after spending countless hours using a Switch Panel to enter a program, the janitor carelessly disconnected the computer in order to vacuum the office. A few choice words would be the order of the day, let me tell you!

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Data Processing with Unit Record Equipment in Iceland

This paper presents an overview of the usage of unit record equipment and punched cards in Iceland and introduces some of the pioneers. The usage of punched cards as a media in file processing started 1949 and became the dominant machine readable media in Iceland until 1968. After that punched cards were still used as data entry media for a while but went completely out of use in 1982.

متن کامل

Applications of the theory of clumps

The paper describes how the need for automatic aids to classification arose in a manual experiment in information retrieval. It goes on to discuss the problems of automatic classification in general, and to consider various methods that have been proposed. The definition of a particular kind of class, or "clump," is then put forward. Some programming techniques are indicated, and the paper conc...

متن کامل

A punched-card system for the laboratory.

A punched-card system was developed to simplify the administrative aspects of the clinical chemistry laboratory. In it a three-part requisition and samples are matched and given a laboratory number. The third copy of the original laboratory requsition is a charge card also used as a name file for the day. Prepunched cards, coded for laboratory tests, are used for each test requested. The labora...

متن کامل

The Role of Adoption Networks in the Success of Innovations

It is widely acknowledged that the ability to make connections is frequently at the heart of the creative process that gives rise to innovation. Often these connections span seemingly unconnected spaces. Textiles manufacturing, for example, has had a profound influence on —of all things— the invention of the modern computer. The 19 century Jacquard loom used in large textile factories had a sys...

متن کامل