1.   Because a computer uses the data in its main memory chips millions of times every second, the computer must constantly pause to decompress the data before processing.

2.   In a television picture tube, a stream of electrons draws horizontal lines across the screen dozens of times every second.

3.   Ten times every second, the sensors relay their position to a computer at a central monitoring facility.

4.   This data is first converted to digital form by a chip that samples the analog waves millions of times each second.

5.   To maintain the data, it must be refreshed several hundred times each second.