You can help Wikipedia by writing articles to help lower the number of red links. The specific problem is: The list of uses needs to be tidied so it does not advertise anything. A drawing of a usual modern desktop computer books in hindi language pdf. A computer is a programmable machine.
Modern computers are very different from early computers. They can do billions of calculations per second. Some very sophisticated computers can also be controlled with voice commands or hand gestures or even brain signals through electrodes implanted in the brain or along nerves. Computers can be designed to do almost anything with information. Computers are used to control large and small machines which in the past were controlled by humans.
They only follow the instructions in their software programs. These programming languages are more like the language with which one talks and writes every day. A computer is a programmable electronic device designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations, all under the control of software. Mainframes, desktop and laptop computers, tablets and smartphones are some of the different types of computers.
It solves problems according to instructions given to it by the computer user called programs or software. Most humans have a problem with math. It is hard to remember all the steps! People made tools to help them remember where they were in a maths problem. The other problem people have is that they have to do the same problem over and over and over again. That took a lot of time and made mistakes. This part of computer history is called the “history of automated calculation,” which is a fancy phrase for “the history of machines that make it easy for me to do this same maths problem over and over without making mistakes.
People did not want a machine that would do the same thing over and over again. For example, a music box is a machine that plays the same music over and over again. Some people wanted to be able to tell their machine to do different things. For example, they wanted to tell the music box to play different music every time.
They wanted to be able to program the music box- to order the music box to play different music. This part of computer history is called the “history of programmable machines” which is a fancy phrase for “The history of machines that I can order to do different things if I know how to speak their language. He built a mechanical theater which performed a play lasting 10 minutes and was operated by a complex system of ropes and drums. These ropes and drums were the language of the machine- they told what the machine did and when.
Some people argue that this is the first programmable machine. Historians disagree on which early machines are “computers”. Other Europeans made more calculators after him. They were not modern computers because they could only add, subtract, and multiply- you could not change what they did to make them do something like play Tetris. Because of this, we say they were not programmable. Now engineers use computers to design and plan.