Department of Biomedical Informatics College of Health Solutions

Definition
A computer is a programmable electronic device designed to allow data, perform prescribed mathematical and logical operations at broadband, and screen the results of these operations, all under the control of software. Mainframes, desktop and laptops, tablets and smartphones are a few of the various types of computer systems. An electronic machine which helps in solving problems quickly and easily. It solves problems relating to instructions directed at it by the computer customer called programs or software. It is a digital machine(that uses binary digits) used in all field

Automation
Most humans have trouble with math. To show this, try doing 584 x 3,220 in your mind. It is hard to remember all the steps! People made tools to help them bear in mind where they were in a math problem. The other problem people have is that they need to do the same problem over and over and over again. A cashier was required to make change every day in her head or with a bit of paper. That got lots of time and made errors. So, people made calculators that performed those same things again and again. This part of computer history is called the "history of robotic calculation," which is a fancy phrase for "the history of machines which make it easy for me to get this done same maths problem over and over without making blunders."The abacus, the slide guideline, the astrolabe and the Antikythera system (which schedules from about 150-100 BC) are examples of automated calculation machines.

Programming
People do not want a machine that would do a similar thing over and over again. For example, a music pack is a machine that performs the same music over and over again. Some people wished to have the ability to tell their machine to do various things. For example, they wished to tell the music pack to try out different music every time. They wanted to be able to program the music field- to order the music pack to play different music. This part of computer history is called the "history of programmable machines" which really is a fancy word for "The history of machines that I could order to do different things if I learn how to speak their terms."Among 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 enduring 10 minutes and was handled by a complicated system of ropes and drums. These ropes and drums were the terminology of the machine- they told what the machine did so when. Some people claim that this is the first programmable machine.Historians disagree which early machines are "personal computers". 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 changed every day in order to take into account the changing lengths of day and night throughout the year. Some count number this daily modification as education.Others say the first computer was created by Charles Babbage. Ada Lovelace is considered to be the first programmer.

The Processing Era
At the end of the Middle Age ranges, people in European countries thought mathematics and anatomist were more important. In 1623, Wilhelm Schickard made a mechanical calculator. Other Europeans made more calculators after him. They were not modern computer systems because they could only add, subtract, and increase- you cannot change what they does to make them do something like play Tetris. Because of this, we say these were not programmable. Now technical engineers use computers to create and plan.In 1801, Joseph Marie Jacquard used punched newspaper cards to share with his textile loom the type of design to weave. He might use punch cards to tell the loom how to proceed, 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 that may estimate. He called it "The Analytical Engine".[8] Because Babbage did not have enough money and always modified his design when he had a much better idea, he never built his Analytical Engine unit.As time continued, computer systems were used more. People get weary easily doing a similar thing over and over. Imagine spending your daily life writng down things on index credit cards, stocking them, and then needing to go see them again. The U.S. Census Bureau in 1890 acquired hundreds of individuals doing just that. It had been expensive, and accounts took a long time. Then an engineer exercised steps to make machines do a lot of the task. Herman Hollerith created a tabulating machine that could automatically accumulate information that the Census bureau collected. The Processing Tabulating Recording Firm (which later became IBM) made his machines. They leased the machines rather than selling them. Makers of machines possessed long helped their users understand and repair them, and CTR's technology support was especially good.Due to machines like this, new means of speaking with these machines were invented, and new types of machines were created, and eventually the computer as we realize it was born.

Analog and Digital Computers
In the first half of the 20th century, scientists started out using computers, usually because scientists had a whole lot of math to figure out and wished to spend more of their time thinking about science questions instead of expending hours adding numbers mutually. For example, if indeed they had to establish a rocket ship, they had a need to do a whole lot of math to make sure the rocket proved helpful right. So they put together pcs. These analog pcs used analog circuits, which made them very hard to program. Inside the 1930s, they invented digital personal computers, and soon made them much easier to program. However this is false as much consecutive tries have been made to bring arithmetic logic to l3.Analogue pcs are mechanised or electronic devices which solve problems. some are used to control machines.