Search results
IBM 5924 Key Punch. The IBM 5924 Key Punch was the 029 model T01 attached with a special keyboard in IBM's 1971 announcement of the IBM Kanji System, the keypunch operator's left hand selecting one of 15 shift keys and the right hand selecting one of 240 Kanji characters for that shift.
Mar 29, 2021 · IBM Key Punches. Columbia's Herman Hollerith pioneered punch card computation beginning in the late 1880s, when he chose punched cards as the medium for encoding and storing demographic data for the 1890 US Census, based on the ability to use a card as a "record" for each person, with sufficient capacity to hold all the needed information, and ...
TypeNameIntroducedRepertoire0011901Numeric002Port-A-Punch19??Numeric010Mechanical Punch19??Numeric0111923NumericThese forms were then taken by keypunch operators, who using a keypunch machine such as the IBM 026 (later IBM 029) punched the deck. Often another keypunch operator would then take that deck and re-punch from the coding sheets – but using a "verifier" such as the IBM 059 that checked that the original punching had no errors.
Much more information about IBM keypunches, history, how they work, codes, and so forth, is found here. Figure 1 shows our IBM 026 Keypunch. The 026 was first introduced in 1949 replacing even older keypunch models. Figure 2 shows our more modern IBM 029 Keypunch.
- The World According to Punched Cards
- So What Is A Computer Anyway?
- What, No Touch Screen?
- But Where Did Punched Cards Come from?
- So What’s Interesting About The 1401 computer?
- In Conclusion
- For Further Reading
By the time the 1401 was introduced, electromechanical systems based on punched cards were widely used to manage business operations. These large and unwieldy machines — sorters, collators, punched card calculators and tabulators – each had unique functions and were used together to solve large-scale business problems. For example, inventory manage...
Just about every recent electronic computer has a similar block diagram if you stand far enough back: There are only three major sections: 1. The Central Processing Unit (CPU) is the part that actually computes things… CPUs can add, subtract, sometimes multiply and occasionally divide, plus perform a host of other operations like copying and compar...
Of course any computer’s I/O devices are critical, as that’s where programs and data go in, and answers come out. While many I/O devices were added during the 1401 family’s lifetime, the machine started out with only three: 1. As noted, punched cards were critical to data processing using tabulating machines long before what we’d recognize as progr...
The 1401 doesn’t have a keyboard or display, so how would all that important business data get into the computer in the first place? The 1401 could read the data from punched cards, but where did they come from? For that, there’s another machine in the CHM lab, called a keypunch, where data entry operators could type in the data, one card at a time...
For those of us interested in how computers work, the 1401 fits into a transitional phase in the development of modern computers. Many characteristics are still very familiar, but some are quite different because of the focus on the “unit record”1 one-punched-card-at-a-time paradigm. As shown above, the machine’s internal architecture lines up well...
The 1401 was certainly not the biggest computer on the block when it was introduced, but the focus on modest cost and compatibility with existing business processes made it a very successful machine. Thousands were sold, and by 1965, half of all computers in the world were of the 1401 family, spawning an entire generation of programmers who first l...
More on punched-card data processing: Principles of Data Processing, William J. Claffey, 1967, Dickenson PublishingJun 28, 2024 · The IBM 29 Card Punch (also called the 029 or Type 029 Key Punch or Keypunch), introduced about 1964 to coincide with the introduction of the IBM 360. Available in nine models with various combinations of keyboard (12-key numeric or 64-key alphanumeric), zero insertion, printing, and interpreting, and also as the IBM 59 Card Verifier (for ...
Jan 13, 2015 · We were taught about the IBM punched card machines of that time. These included the high speed sorter, collator, accumulator/printer and keypunches. The sorter could take a stack of cards and sort them into eleven stacks, one column at a time.
