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A punchcard is a rectangular piece of paper card stock that is used to store data by means of punched holes in specified locations. Different company's punchcard equipment used different size cards, shape of holes, patterns of holes, etc. Examples of common card formats are:
- IBM 80 column - rectangular holes, 80 characters/card (this is the card most people are familiar with)
- Remington Rand/UNIVAC - round holes, 90 characters/card
- IBM 96/128 column - small round holes, 96 or 128 characters/card (much smaller than 80 column card)
- Powers-Samas - round holes, 40 characters/card
- etc.
They were eventually replaced as technology superseded them and made them obsolete. They were very low density data storage by today's standards. A typical box of 2000 cards occupies about 0.22 cubic feet and can store 160,000 characters. Compare this to a small capacity USB thumb drive which occupies maybe a cubic inch and can store 8 billion characters. To store the same 8 billion characters on punchcards you would need about 11,000 cubic feet of warehouse space. The USB drive is directly read/write accessible by your computer, the punchcards are not you need a reader/punch connected to the computer which you will have to manually load and unload cards every few thousand. Once punched cards are read only, you can't unpunch a hole. Cards cannot be accessed by filename and must be read or punched in sequence. etc.
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What are punch cards?
Punch cards are a very old way of programming a computer. The punch card would have long rows of numbers, representing certain instructions. You would punch a hole through the number corresponding to the instruction you wanted to execute. You would then feed the card into the computer, and it would run the program.
The Help America Vote Act was passed in 2002 to try to eliminate?
All labor operated machines have been replaced with punch card ballots.
What was not one of the changes implemented by the Help America Vote Act 2002?
All lever-operated machines have been replaced with punch-card ballots.
What happened to the fingerhut punch board cards where people paid no more than 99 cents for a punch to win that picture prize?
i would like to know the same and one large punch with name under it you get one for doing the card and then one person gets prize also for the name under the large circle
What was a punch card machine and when was it used?
For work.Punch card Machines and machines that stamp a date and time on an card. These were often used in factory's to log employees work time. These are still in use today.Computer Punch CardsPunch card machines were the method for creating and storing computer programs. A card with 80 columns would be put in the machine and a line of a computer program punched into it. It had a QWERTY type keyboard and was pretty klunky to use. (I wrote my first computer programs on one!) The cards were stacked up and run through a card reader, which would program the computer and execute the progam.I believe punch cards came into being in the 1960's. Most places phased out the punch cards in the 1980's, though there might still be a few around. Basically the transition was:Punch CardsReel to Reel Tape8" SS FloppiesHard Drives began to be available5 1/2" SS Floppies5 1/2" DS Floppies5 1/2" DS HD Floppies3 1/2" DS HD FloppiesCD-ROMDVDFlash drives
Are punch card used for data analysis?
Punch cards store data. That data can then be analysed by feeding the cards into a punch card reader.
What is the probability of getting an ace of hearts and a king of hearts from a regular deck of cards without jokers?
The answer depends on how many cards are drawn and whether or not they are replaced before the next card is drawn.The answer depends on how many cards are drawn and whether or not they are replaced before the next card is drawn.The answer depends on how many cards are drawn and whether or not they are replaced before the next card is drawn.The answer depends on how many cards are drawn and whether or not they are replaced before the next card is drawn.
What is electronic punch card system?
An electronic punch card system was the first data entry system for computers. Cards were punched with holes according to the information that was stored or directions for the computer. The card was inserted into a card reader and the data was collected. Factories still use a type of punch card system with their manual time cards. Only with the time card, information is printed on the card instead of holes punched.
If a card punch operator can process 80 cards in half an hour How many cards can this process in 7hr 30min?
1200
What is the use of punch card in factory?
Punch cards are used with electro-mechanical timeclocks to record and create a paper trail of employee attendance.
If you pull two cards out of a deck it will a face card?
The answer depends on: whether the first card is replaced before drawing the second card,whether one or both cards need to be face cards.
What is punched card?
A punch card are cards with punched holes in them that represent data. You feed them into a (usually) large-scale computer that can accept them.
What is the probability of a red face card is not drawn from adeck of cards?
The answer depends on how many cards are drawn and whether or not they are replaced afterwards.For a single card, drawn at random, the probability is 26/52 = 1/2.The answer depends on how many cards are drawn and whether or not they are replaced afterwards.For a single card, drawn at random, the probability is 26/52 = 1/2.The answer depends on how many cards are drawn and whether or not they are replaced afterwards.For a single card, drawn at random, the probability is 26/52 = 1/2.The answer depends on how many cards are drawn and whether or not they are replaced afterwards.For a single card, drawn at random, the probability is 26/52 = 1/2.
What is the probability drawing an ace followed by a king?
If only two cards are drawn from a standard deck of cards, with the first card replaced before drawing the second, the answer is 0.005917 (approx). If the first card is not replaced, the probability increases to 0.006033.
How many ways can 4 clubs be drawn from a standard 52 card deck?
The answer depends on how many cards are drawn and whether or not each is replaced before drawing the next card.The answer depends on how many cards are drawn and whether or not each is replaced before drawing the next card.The answer depends on how many cards are drawn and whether or not each is replaced before drawing the next card.The answer depends on how many cards are drawn and whether or not each is replaced before drawing the next card.
When drawing cards from a box if the selected card is replaced then repetitions are not allowed is this true or false?
true
How many IBM punch cards would a computer need to solve a system of 12 linear simultaneous equations if 12 coefficients were punched on each card?
13 cards.
