K

Kbps
Stands for "Kilobits Per Second." Don't confuse this with Kilobytes per second (which is 8 times more data per second). This term is commonly used in describing data transfer rates. For example, two common modem speeds are 33.6 Kbps and 56 Kbps.
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Kernel
This is a term for the computing elite, so proceed at your own risk. To understand what a kernel is, you first need to know that today's operating systems are built in "layers." Each layer has different functions such as serial port access, disk access, memory management, and the user interface itself. The base layer, or the foundation of the operating system, is called the kernel. The kernel provides the most basic "low-level" services, such as the hardware-software interaction and memory management. The more efficient the kernel is, the more efficiently the operating system will run.
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Keystroke
A keystroke is typing one character (not stroking your keyboard like a cat). Every time you hit a key, you perform a keystroke. So 5400 keystrokes in one hour means hitting 5400 keys in one hour, or 90 keys a minute. Sometimes keystrokes per minute is used to measure typing speed instead of words per minute. After all, typing the word "hi" 50 times usually doesn't take as long as typing "Nebuchadnezzar" 50 times.
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Kilobyte
A kilobyte consists of 1024 bytes of computer data. Now, I realize this may be a shock to those of you, who for your whole life, thought a kilobyte was 1000 bytes. "But 'kilo' means one thousand!" you exclaim. True, but in the computer world, certain rules and guidelines don't have the same influence they do in most other areas. Just ask any computer programmer. A kilobyte is 1024 bytes because it is measured by 2^10, which equals 1024. However, because 1024 is so close to 1000, in most cases, it is OK to refer to a kilobyte as 1000 bytes.
Abbreviation: "K".
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