When a computer is switched on, the power supply is taken out of standby mode and runs up to full power mode. Voltage is applied to the motherboard and peripheral units. At the same time a reset pulse is applied to the motherboard. This will start the Central Processor Unit, which applies clock pulses to the onboard chips.
On the motherboard the BIOS chip starts its program.
The BIOS checks the available amount of memory and checks that the keyboard and mouse are connected. This is known as the POST (Power On Self Test).
It then checks for available long term memory storage, such as disk drives and removable drives.
Depending on how it is set up, it will choose a drive and check whether a valid operating system is available.
If an operating system is available and bootable, this program will now run.
Control is now taken over by the O/S on the drive.
What happens next will depend on the O/S installed.
It's called a POST. POST stands for Power On Self Test. It's basically a set of diagnostic tools the computer uses to check the hardware is working correctly.
airthmetic, logical and storage operations
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If you are asking in terms of computers then an operation is performed on an operand.
An operation which when performed multiple times, has no further effect on Its subject after the first time it is performed. - Nacolepsy
An active operation is one that is currently being performed.
Examples: * [] -> = ==,<=,<,!=,>=,> +,+=,-,-=
Operand data type is one of the two components of computer language and expressions. It is the manipulated object or the instruction that specifies which operation is to be performed.
The Network Layer controls the operation of Subnet in computer networks.
If you see pictures, then your computer screen is turned on.
Operand data type is one of the two components of computer language and expressions. It is the manipulated object or the instruction that specifies which operation is to be performed.
Is an operation.
no operation is not performed