File:AIT Engineering and Informatics Building.jpg Wikipedia

Definition
A computer is a programmable digital camera designed to admit data, perform approved mathematical and logical operations at broadband, and screen the results of the functions, all under the control of software. Mainframes, desktop and laptops, tablets and smartphones are a few of the different types of pcs. An electronic machine which assists with solving problems efficiently. It solves problems matching to instructions directed at it by the computer individual called programs or software. It is an electronic machine(that uses binary digits) found in all field

Automation
Most humans have a problem with math. Showing this, try doing 584 x 3,220 in your mind. It really is hard to remember all the steps! People made tools to help them remember where these were in a mathematics problem. The other problem people have is that they have to do the same problem again and again and once more. A cashier had to make change every day in her mind or with a bit of paper. That had taken lots of time and made errors. So, people made calculators that have those same things again and again. This part of computer record is named the "history of automatic calculation," which is a fancy key phrase for "the annals of machines which make it possible for me to do this same maths problem again and again without making blunders."The abacus, the slide rule, the astrolabe and the Antikythera mechanism (which schedules from about 150-100 BC) are types of automated computation machines.

Programming
People do not want a machine that could do the same thing over and over again. For example, a music container is a machine that takes on the same music again and again. Some people wished to be able to inform their machine to do different things. For example, they wanted to tell the music pack to learn different music every time. They wanted to have the ability to program the music pack- to order the music pack to experiment with different music. This part of computer history is named the "history of programmable machines" which is a fancy term for "The history of machines that I can order to do different things if I know how to speak their words."One of the first examples of this is built by Hero of Alexandria (c. 10-70 AD). He built a mechanised movie theater which performed a play lasting ten minutes and was handled by a sophisticated system of ropes and drums. These ropes and drums were the terms of the machine- they advised what the device did so when. Some people claim that this is the first programmable machine.Historians disagree on which early on machines are "computer systems". Many say the "castle clock", an astronomical clock developed by Al-Jazari in 1206, is the first known programmable analog computer. The length of night and day could be fine-tuned every day to be able to take into account the changing lengths of night and day throughout the year. Some count up this daily adjustment as computer programming.Others say the first computer was created by Charles Babbage. Ada Lovelace is known as to be the first programmer.

The Computing Era
At the end of the center Age range, people in European countries thought math and executive were more important. In 1623, Wilhelm Schickard made a mechanised calculator. Other Europeans made more calculators after him. They were not modern computer systems because they could only add, subtract, and multiply- you cannot change what they performed to make sure they are do something like play Tetris. Because of this, we say they were not programmable. Now engineers use computers to design and plan.In 1801, Joseph Marie Jacquard used punched newspaper cards to inform his textile loom the type of pattern to weave. He might use punch cards to share with the loom what to do, and he could change the punch cards, which means he could program the loom to weave the pattern he wanted. This means the loom was programmable.Charles Babbage wished to make an identical machine which could compute. He called it "The Analytical Engine".[8] Because Babbage didn't have enough money and always altered his design when he had a better idea, he never built his Analytical Engine unit.As time continued, pcs were used more. People get bored stiff easily doing a similar thing over and over. Imagine spending your life writng down things on index cards, storing them, and then needing to go find them again. The U.S. Census Bureau in 1890 got hundreds of folks doing that. It had been expensive, and reviews took a long time. Then an engineer worked out steps to make machines execute a lot of the work. Herman Hollerith invented a tabulating machine that could automatically accumulate information that the Census bureau accumulated. The Processing Tabulating Recording Corporation (which later became IBM) made his machines. They leased the machines instead of selling them. Creators of machines got long helped their users understand and repair them, and CTR's technical support was especially good.Because of machines like this, new means of talking to these machines were developed, and new types of machines were invented, and eventually the computer as we know it was born.

Analog and Digital Computers
In the first 1 / 2 of the 20th century, scientists started using computers, typically because scientists got a whole lot of math to figure out and wished to spend more of their own time thinking about research questions instead of expending hours adding numbers together. For example, if they had to launch a rocket dispatch, they needed to do a great deal of math to ensure the rocket functioned right. So they come up with computers. These analog computer systems used analog circuits, which made them very hard to program. Within the 1930s, they developed digital computer systems, and soon made them much easier to program. However this is not the case as many consecutive efforts have been made to bring arithmetic logic to l3.Analogue personal computers are mechanised or gadgets which solve problems. some are being used to regulate machines.