Computer

1) An example of an output device is a. The keyboard, b. The mouse, c. The power cord, d. The monitor. 2) A device driver is: a. The person who delivers hardware devices to a computer store, b. The connector that allows you to attach the device to a computer, c. A computer program that allows the operating system to communicate with the device, d. The power supply for the device 3) What is a computer network ? a. A group of computers that share the same power supply b. A computer that can be used by different users simultaneously c. Two or more computers connected together that can share data and programs d. Any sets of computers manufactured by the same company 4) In Python, if you write: A = ‘5’ + ‘5’ The value of A is: a. 10 b. 55 c. ‘55’ d. ‘10’ 5) Which of the following are executed by the BIOS ( check all that applies ): a. Memory test b. Load application software c. Print a test page on the printer d. Load the operat...

MAINTENANCE What is computer maintenance? Computer maintenance is the practice of keeping computers in a good state of repair. A computer containing accumulated dust and debris may not run properly. Dust and other cruft may accumulate as a result of air cooling. Any filters used to mitigate this need regular service and changes. If the cooling system is not filtered then regular computer cleaning may prevent short circuits and overheating. Components Keyboard The crumbs, dust, and other particulate that fall between the keys and build up underneath are loosened by spraying pressurized air into the keyboard, then removed with a low-pressure vacuum cleaner. A plastic-cleaning agent applied to the surface of the keys with a cloth is used to remove the accumulation of oil and dirt from repeated contact with a user's fingertips. If this is not sufficient for a more severely dirty keyboard, keys are physically removed for more focused individual cleaning, or for better ...