LISA is a computer operating system developed by Apple Inc. It was designed to be a more user-friendly alternative to the more complex Macintosh operating system. LISA was released in 1983 and was the first commercial computer system to use a graphical user interface (GUI). It was also the first personal computer to offer hard … Read more

Phase-change memory (PCM)

PCM is a type of non-volatile memory that uses a phase change material to store data. The material is in a crystalline state when it is in the “1” state, and in an amorphous state when it is in the “0” state. The material can be switched between these two states by heating it above … Read more

Expanded memory

Expanded memory is a type of random-access memory (RAM) that is designed to provide extra memory for computers. It is typically used in conjunction with a memory management unit (MMU) to increase the amount of memory that can be accessed by the system. Expanded memory is typically used to store data that is not frequently … Read more

PARC (Palo Alto Research Center)

PARC (Palo Alto Research Center) is a research and development company that specializes in a variety of information technology fields, including computer hardware, software, networking, and imaging. Founded in 1970, PARC is best known for its early work on personal computers, graphical user interfaces (GUI), and laser printing. PARC has also been involved in the … Read more

Instruction set

An instruction set is a set of basic instructions that a computer can execute. The instruction set for a particular computer is the set of instructions that the computer can execute. The term “instruction set” can also refer to the set of instructions that a particular processor can execute. For example, the instruction set for … Read more

Disk cloning

Disk cloning is the process of copying the contents of one disk to another disk. The new disk will have the same contents as the original disk, but it will be a different physical disk. Disk cloning can be used to create backups, or to upgrade to a larger disk. To clone a disk, you … Read more

Modular PC

A modular PC is a computer that is built using modular components. These components can be swapped out and replaced with other components, allowing for a greater degree of customization. This type of PC is often used by gamers and enthusiasts, who often need to upgrade their hardware on a regular basis. Is the Razer … Read more