what are the devices that used as the computers before inventing the computer (give atleast 5 devices)?

Answer 1

WANG automatic typewriter
abacus
Babbage sorting machine
IBM 029 and 129 keypunch machines and IBM card sorters
slide rule
Burroughs long division electric (mechanical!) calculator
book of logarythmic tables
trained mathematicians with photographic memory
adding machine
accountant's columnar worksheets and ledgers
manual and electric typewriters
linotype machine
teletype printer (before the internet!)
wirephoto sender and printer
ledger cards and sheets with magnetic strips
paper and papyrus records
clay tablets with sylus

Answer 2

abbacus,
Probably the oldest calculator in the world, also still used in some parts of the world. Its a series of beads on rods that the person could slide back and forth. Each rod would count as either ones, tens, hundreds, thousands, tens of thousands and so on. A skilled user of the abbacus could probably out calculate most average users of todays computers and electronic calculators.

vacume tubes,
This was the precursor to the modern silicon computer. It used vacume tubes much the same way that the chips of today are used. Of course there was a major problem of the tubes blowing out and then the computer would stop working. Many of these computers used thousands of these tubes to work as a regular hand held calculator today, of course they took up the whole room to do the same things too.

mechanical calculators,
These were used back durring world war II. These calculators used a series of gears and cogs to calculate fireing distences, angles and powers. The computer operator would slide dials that would represent distences, headings, and other information about the enemy ship and their own ship. As the operator changed these dials, the "computer" would change its display dials to show how much pressure they would need to fire the shell, what dirrection and height they would need to shoot it at as well. These computers helped the US navy become one of the best out on the seas durring WW2.

pen and paper,
The most common used calculator in the world, many people can use a simple sheet of paper and a pen to calculate almost anything. It might take a lot longer, but its still used to day by everyone at least once.

slideruler
This device was used sometime back in the early 1910's (not sure exactly when it was devised.). Its hayday came durring the appolo missions to the moon. Durring that time this device which consisted of two sliding sticks inside of a ruler, could calculate almost all the same functions a hand held calculator could today. Depending on what function you were doing you would use a different sliding technique on the ruler to find the answer.

Answer 3

abacus - calculator
Baseball and bat -MLB 2006
Typewriter - word processing
Paper and pencil combo - MSPaint v -1
women -The internet is for porn

Answer 4

typewriter
slide-rule
file cabinets
walkmans
graph paper

Answer 5

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