Answer:
A. Software is a collection of instructions and data that tell the computer how to work. This is in contrast to physical hardware, from which the system is built and actually performs the work.
B. the programs and other operating information used by a computer.
Hardware is a generic term for any physical part of the computer system which you can physically touch, pick up or move.
A. The system unit, also known as a "tower" or "chassis," is the main part of a desktop computer. It includes the motherboard, CPU, RAM, and other components. The system unit also includes the case that houses the internal components of the computer.
B. An access point is a device that creates a wireless local area network, or WLAN, usually in an office or large building. An access point connects to a wired router, switch, or hub via an Ethernet cable, and projects a Wi-Fi signal to a designated area. For example, if you want to enable Wi-Fi access in your company's reception area but don’t have a router within range, you can install an access point near the front desk and run an Ethernet cable through the ceiling back to the server room.
C. a machine for printing text or pictures onto paper, especially one linked to a computer.
D. a lever that can be moved in several directions to control the movement of an image on a computer or similar display screen.
E. a device for examining reading or monitoring something
