Num Lock or Number Lock (⇭) is a key on the numeric keypad of most computer keyboards. It is a lock key, like Caps Lock and Scroll Lock. Its state (on or off) affects the function of some of the keys, and is commonly displayed by an LED built into the keyboard.
The Num Lock key exists because earlier 84-key IBM PC keyboards did not have arrows separate from the numeric keypad. Num Lock would be used to choose between the two functions. On some laptop computers, the Num Lock key is used to convert part of the main keyboard to act as a (slightly skewed) numeric keypad rather than letters. On some laptop computers, the Num Lock key is absent and replaced by the use of a key combination.
Since most modern desktop computers have a full-size keyboard with both a numeric pad and separate arrow keys, Num Lock is rarely used for its original purpose, and ends up confusing the user if it has for some reason been activated without the user being aware of this. This can be more of an issue on most laptop computers, since activating the Num Lock function typically requires use of the Fn key and if a user accidentally switches it on they may have no idea how to switch it off. If a full-size keyboard is plugged into a laptop, then the Num Lock function is normally off, and the user would have to activate the Num Lock function to use the numeric keypad for numeric entry. Since Apple keyboards never had a combination of arrow keys and numeric keypad (but some lacked arrow keys, function keys and a numeric keypad altogether), Apple has keyboards with a separate numeric keypad but no functional Num Lock key. Instead, these keyboards include a Clear key.
Num may refer to:
NUM may refer to:
The Book of Numbers (from Greek Ἀριθμοί, Arithmoi; Hebrew: בְּמִדְבַּר, Bəmiḏbar, "In the desert [of]") is the fourth book of the Hebrew Bible, and the fourth of five books of the Jewish Torah.
Numbers begins at Mount Sinai, where the Israelites have received their laws and covenant from God and God has taken up residence among them in the sanctuary. The task before them is to take possession of the Promised Land. The people are numbered and preparations are made for resuming their march. The Israelites begin the journey, but they "murmur" at the hardships along the way, and about the authority of Moses and Aaron. For these acts, God destroys approximately 15,000 of them through various means. They arrive at the borders of Canaan and send spies into the land, but upon hearing the spies' fearful report concerning the conditions in Canaan the Israelites refuse to take possession of it, and God condemns them to death in the wilderness until a new generation can grow up and carry out the task. The book ends with the new generation of Israelites in the Plain of Moab ready for the crossing of the Jordan River.
Among the Nenets people of Siberia, the male Num was the sky god, the good creator of earth and the high god of the Nenets. Num is one of two demiurges, or supreme gods. The Nenets believed earth and all living things were created by the god Num and every heavenly sphere is ruled by one son of the Num god. Nga was his malevolent son.
According to one story, the world threatened to collapse on itself. To try to halt this cataclysm a shaman sought the advice of Num. The shaman was advised to travel below the earth, to Nga's domain and call upon him. The shaman did as told and was wed with Nga's daughter. After that point he began to support the world in his hand and became known as "The Old Man of the Earth."
In another myth, Num and Nga create the world, collaborating and also competing with each other — the myth is an example of dualistic cosmology.
The word Num means heaven in Nenets.