This is the technical questions and answers section for to improve your technical knowledge.
Keyboard is an important device that allows a person to enter symbols like letters and numbers into a computer. It is the main input device for most computers.
There are different types of keyboards. The most popular type is the QWERTY design, which is based on typewriter keyboards. The QWERTY … Read more
Computer mouse is a hardware input device that was invented by Douglas Engelbart in 1963 while working at Xerox PARC, who at the time was working at the Stanford Research Institute, which was a think tank sponsored by Stanford University. The picture is of a Microsoft IntelliMouse and is an … Read more
SMPS stands for Switched Mode Power Supply. It uses a switching regulator to convert electric power efficiently. SMPS transfers electric power from a source ( AC mains) to the load by converting the characteristics of current and voltage. SMPS always provide a well regulated power to the load irrespective of … Read more
UPS stands for Uninterruptible Power Supply. It is a power supply that includes a battery to maintain power in the event of a power outage. Typically, a UPS keeps a computer running for several minutes after a power outage, enabling you to save data that is in RAM and shut … Read more
A serial port (Computer) is a serial communication physical interface through which information transfers in or out one bit at a time (in contrast to a parallel port). Throughout most of the history of personal computers, data was transferred through serial ports to devices such as modems, terminals and various … Read more
Webcam is a hardware camera connected to a computer that allows anyone connected to the Internet to view either still pictures or motion video of a user or other object. The picture of the Logitech Webcam C270 is a good example of what a webcam may look like. Today, most … Read more
LAN is a computer network that spans a relatively small area. Most local area networks are confined to a single building or group of buildings, however, one LAN can be connected to other LANs over any distance via telephone lines and radio waves. A system of LANs connected in this … Read more
Wide Area Network(WAN) is a collection of computers and network resources connected via a network over a geographic area. Wide-Area Networks are commonly connected either through the Internet or special arrangements made with phone companies or other service providers. A WAN is different from a MAN because of the distance … Read more