Mustaqil ishlar ro`yhati

1. Mouse
A mouse is an input device that allows you to use point-and-click technology to interact with a computer. Modern mice usually have two buttons with a scroll wheel between them. This device was named a "mouse" because the inventors thought that the wire that connects the device to the computer resembled a mouse tail. Nowadays, mice often connect to the computer using wireless technology.
2. Keyboard
Keyboards are the most common input device. The user enters letters, numbers, and other symbols to give the computer information and instruction. Using a keyboard to enter a lot of information is called typing.
The keyboard works through push buttons or mechanical switches known as keys which, when pressed, send a signal to the computer. In the past, keyboards were used to connect to the computer via a DIN connector, but nowadays, they are more likely to connect via a USB port or be wireless.
3. Webcam
These input devices are video cameras that connect to a computer. They can be external or built-in. Webcams are most often used to enable people to see each other when communicating over the internet, for recording video blogs or making other videos.
As well as computers, webcams can also be built into mobile phones. The first webcam was developed in 1991 at the University of Cambridge. It was pointed at a coffee pot so that researchers from around the Computer Science Department could see if it was full before they got up from their desks.
4. Microphone
Microphones are audio input devices. The microphone feeds a sound signal to the computer, where it can be recorded or streamed across the internet. Microphones are often built into laptops, webcams, and mobile phones nowadays.
The earliest microphones were telephone transmitters invented in the latter half of the 19th century. Various designs were tried, but the first to have reasonable sound quality were (loose-contact) carbon microphones that were developed independently by David Edward Hughes in England and Emile Berliner and Thomas Edison in the US.