Direct memory access (DMA) is a technology that is used by computers to increase speed and efficiency by allowing input-output devices to access RAM directly without involving the CPU. Before the use of DMA, computers used to fully involve the processor in the whole process of sending and receiving data from input and output devices….
A network switch is a networking component device that is mainly used as a central point to connect multiple devices within a network. A network switch is intelligent in such a way that it is possible to identify the destination address of the message and direct it to that device instead of broadcasting. They operate…
The mobile operating system is software used to manage users, hardware, and other software of a mobile device. It is designed to work on a device with limited capabilities, unlike the desktop operating system. They are lightweight compared to desktop OS. Other than the smartphone these operating systems are also used in tablets, smartwatches, and…
A hybrid topology is a computer network layout type that uses multiple topologies such as a bus-star combination. The hybrid is sometimes also known as tree topology where the linear bus topology is used as the trunk of the tree and the star topology becomes the tree branches. The hybrid combines the advantages of the…
Optical character recognition also known as text recognition is a technology that is used to convert images and other scanned documents into computer-editable text. The OCR technology uses software and an optical character reader to convert images, handwritten and scanned documents into machine text readable documents. An optical character reader is categorized as an input…
A star network topology is a type of network layout where all the devices are connected to a central point. The central device can be a network switch or a hub. The layout of the network has the hub or switch at the center of the network and then all other network components are connected…
Magnetic Ink Character Recognition (MICR) is a technology that is used to read characters printed using special magnetic material. They are categorized under input computer devices. MICR is used mostly in banks to verify the authenticity of bank cheques and other financial documents. The characters on these documents are printed using special ink that contains…
CD, DVD, and Blu-ray are types of optical discs that are used for the permanent storage of data. They are used to store music, video, images, and other variety of data. The main difference between the 3 types of optical discs is the storage capacity and the types of data that each disc can store. Again…
A mesh network topology is a network layout where each device is connected. The connection can be wired or wireless. Each node on the network is capable of communicating with the other and they also act as a relay to pass messages to their destination. The most practical and common type of mesh is wireless…
A command line interface is an interface where the user uses text-based commands to communicate with the system. It is also known as a character or console user interface. It was the main way for a user to interact with the computer operating system and application before the use of GUI. Today it is still…