Software Engineering for Business Information Systems sebis Department of Informatics

Definition
Some type of computer is a programmable digital camera designed to accept data, perform prescribed mathematical and rational operations at broadband, and display the results of these procedures, all under the control of software. Mainframes, desktop and laptops, tablets and smartphones are some of the various types of personal computers. An electric machine which helps in solving problems quickly and easily. It solves problems relating to instructions directed at it by the computer consumer called programs or software. It is a digital machine(that uses binary digits) used in all field

Automation
Most humans have a problem with math. To show this, try doing 584 x 3,220 in your mind. It really is hard to keep in mind all the steps! People made tools to help them bear in mind where they were in a math problem. The other problem folks have is that they need to do the same problem over and over and over again. A cashier had to make change every day in her head or with a piece of paper. That required lots of time and made mistakes. So, people made calculators that have those same things again and again. This part of computer history is called the "history of automatic calculation," which really is a fancy expression for "the history of machines that make it possible for me to get this done same maths problem over and over without making errors."The abacus, the slip rule, the astrolabe and the Antikythera device (which schedules from about 150-100 BC) are types of automated computation machines.

Programming
People do not need a machine that could do a similar thing over and over again. For instance, a music pack is a machine that takes on the same music over and over again. Some people wanted to be able to tell their machine to do different things. For instance, they wanted to notify the music box to experiment with 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 saying for "The history of machines that I can order to do different things if I know how to speak their dialect."One of the first examples of this is built by Hero of Alexandria (c. 10-70 AD). He built a mechanical movie theater which performed a play sustained 10 minutes and was managed by a complex system of ropes and drums. These ropes and drums were the dialect of the machine- they advised what the device did so when. Some people dispute that this is the first programmable machine.Historians disagree which early on machines are "computers". Many say the "castle clock", an astronomical clock invented by Al-Jazari in 1206, is the first known programmable analog computer. The length of night and day could be tweaked every day to be able to account for the changing measures of day and night throughout the year. Some count this daily adjustment as education.Others say the first computer was made by Charles Babbage. Ada Lovelace is known as to be the first programmer.

The Computing Era
By the end of the Middle Age range, people in Europe thought math and engineering were more important. In 1623, Wilhelm Schickard made a mechanised calculator. Other Europeans made more calculators after him. These were not modern pcs because they could only add, subtract, and multiply- you cannot change what they did to make sure they are take action like play Tetris. As a result of this, we say these were not programmable. Now designers use computers to design and plan.In 1801, Joseph Marie Jacquard used punched newspaper cards to tell his textile loom the type of style to weave. He might use punch cards to share with the loom how to proceed, and he could change the punch credit cards, this means he could program the loom to weave the design he wanted. This means the loom was programmable.Charles Babbage wanted to make a similar machine that can assess. He called it "The Analytical Engine".[8] Because Babbage didn't have enough money and always modified his design when he had a much better idea, he never built his Analytical Engine.As time went on, personal computers were used more. People get bored easily doing a similar thing again and again. Imagine spending your life writing things down on index cards, saving them, and then having to go see them again. The U.S. Census Bureau in 1890 possessed hundreds of individuals doing just that. It had been expensive, and information took quite a while. Then an engineer exercised how to make machines do a lot of the task. Herman Hollerith created a tabulating machine that would automatically add up information that the Census bureau collected. The Processing Tabulating Recording Corporation (which later became IBM) made his machines. They leased the machines instead of selling them. Producers of machines got long helped their users understand and repair them, and CTR's technology support was especially good.Due to machines like this, new ways of talking to these machines were created, and new types of machines were invented, and finally the computer as we realize it was born.

Analog and Digital Computers
In the first 1 / 2 of the 20th hundred years, scientists started out using computers, mainly because scientists had a whole lot of math to figure out and wished to spend more of their own time thinking about knowledge questions rather than expending hours adding numbers together. For example, if they had to unveiling a rocket dispatch, they needed to do a whole lot of math to be sure the rocket performed right. So they put together personal computers. These analog computer systems used analog circuits, which made them very difficult to program. Within the 1930s, they invented digital personal computers, and soon made them easier to program. Financial firms not the case as much consecutive endeavors have been made to bring arithmetic reasoning to l3.Analogue pcs are mechanical or gadgets which solve problems. some are being used to control machines.