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Computer Basics Notes

What oversees everything a computer does? The CPU
What are the three main things that a CPU does? Fetch, Decode, and Execute
What are today's computers processing speed measured in, in terms of hertz? Gigahertz (GHz)
How mant cycles per second is a hertz? 1 cycle per second
What is a type of short-term memory on a computer? RAM
What is a type of long-term memory on a computer? ROM
What is BIOS? A type of ROM that is used by the computer to establish when the computer first powers on.
What is caching? The storing of frequently used data in extremely fast RAM that connects directly to the CPU
What is flash memory? A solid state storage device. It retains data even after the computer has been turned off.
Between a floppy disc and a flash drive, which has more memory? A flash drive
How many kilobytes is a one-paged, double-spaced text document? 20 KB
How many bytes are a terabyte? 1,099,511,627,776 bytes
What is the first thing loaded onto a computer? The operating system (OS)
What is the Motherboard? The main circuit board to which all other internal components connect.
Created by: SEB10