Question

for each of the following devices,describe the type of component it is and briefly describe its function within a computer system (a) laser printer (b) mouse (c) 8.1 GB hard drive (d) CPU (e) RAM (f) ROM

Answer 1

laser print is an OUTPUT device  - it takes output from computer and prints it.
Mouse is an INPUT device.  It supplies input to computer about coordinates x,y.

Hard drive is a secondary memory storage device. It stores data in files, permanently. So CPU can retrive the data by reading from hard disk drive and load it into primary memory and then perform operations/commands on that data and later store it back on to the drive.

CPU is the main part of computer - processing unit. It performs commands / mathematical & logical operations on data/values. it has registers and access to primary memory ie., ROM & RAM.  CPU performs operations directly on data in registers and can load & restore data from to RAM & ROM.

RAM : random access memory: when power is off, all data is lost in it. CPU can load some data into the RAM and can perform calculations on that data. CPU can restore that data from RAM onto hard disk or DVD or CD or it print that data by sending it to an OUTPUT device.

ROM : read only memory. thedata in this is not erased when power is off. It stores important instructions for the computer (CPU) to do when power is switched on. So  the computer boots and starts with instructions stored there.

Answer 2

Answer:

Explanation:

Laser Printer- Laser printer is a system of official components that uses a focused beam or light transfer text and images onto paper.

Mouse- Mouse is a basic peripheral components of computer. Its an input device which tells computer where to display cursor of your system's graphical use.

Hard drive- Hard drive is a secondary memory storage device. It stores data in files permanently. It allows CPU to retrieve data by reading hard disk drive and load into primary memory.

CPU- CPU is the central processor of computer that executes instructions to make up a computer program.

RAM- It is a hardware device that allows information to be stored and retrieved.

ROM- It is a non volatile memory used to store data that connot be electronically modified.