Answer:
RAM is used to store computer programs and data that CPU needs in real time. ... RAM data is volatile and is erased once computer is switched off. HDD,hard disk has permanent storage and it is used to store user specific data and operating system file
Most computers have three types of ports: serial, parallel, and USB. A serial port is a type of interface that connects a device to the system unit by transmitting data only one bit at a time. Serial ports usually connect devices that do not require fast data transmission rates, such as a mouse, keyboard, or modem.
Electronic component on a computer's
motherboard that interprets and carries
out the basic instructions that operate
the computer; also called processor.