Num Lock - meaning and definition. What is Num Lock
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What (who) is Num Lock - definition

KEY ON COMPUTER KEYBOARDS WHICH ENABLES OR DISABLES A NUMERICAL PAD ON THE KEYBOARD
Numlock; Num lock; Number Lock; Numbers Lock; Nums lock; ⇭; Num lock key; Num lock light; Num Lock key; NUM LOCK; NumLock; Number lock
  • Numeric keypad

Lock (water navigation)         
  • Agde Round Lock
  • Operation of caisson lock
  • <u>Operation of a canal lock</u><br/>
1–3. Boat enters 'empty' lock<br/>
4. Bottom gates are closed, bottom paddles closed, top paddles opened, lock starts to fill<br/>
5. Lock is filling with water, lifting boat to the higher level
  • gates]]. The gates in each pair close against each other at an 18° angle to approximate an arch against the water pressure on the "upstream" side of the gates when the water level on the "downstream" side is lower.
  • [[Dalmuir]] drop lock
  • Berendrecht Lock (right) and Zandvliet Lock (left), located at the entrance to the Port of Antwerp (top) from the Scheldt (foreground)
  • Lock on the River [[Neckar]] at [[Heidelberg]] in Germany
  • Iroquois Lock on the [[Saint Lawrence Seaway]]
  • A pound lock on the Keitele–[[Päijänne]] Canal at [[Äänekoski]] in [[Central Finland]]
  • Collection of lock windlasses. Note: rakes are for clearing trash out of the lock.
  • Hatton flight]] in England
  • Doubled locks. Left lock has boat in it, right lock (center of drawing) is empty. This is on the Erie Canal at Lockport.
  • Entrance to Minden shaft lock
  • The turf-sided [[Monkey Marsh Lock]] on the Kennet & Avon Canal at [[Thatcham]]
  • 180px
  • Model of early river pound lock, constructed in Lankheet water park, Netherlands
  • abbr=on}} in a lock
  • Snubbing a boat to keep it from hitting the downstream gates. Note the rope wrapped around the snubbing post.
  • [[Three Gorges Dam]] model view. A pair of five locking steps is at center with a ship lift to the left
  • [[Three Gorges Dam]] lock near [[Yichang]] on [[Yangtze]] river, China
  • Barges at a lock on the [[Mississippi River]]
FALL STRUCTURE WITH A FIXED CHAMBER IN WHICH THE WATER LEVEL CHANGES
Canal locks; Ship lock; Lock (canal); Lock and dam; Shiplock; Navigation lock; Pound lock; Lock (river); Locks (canal); Canal lock; Locks (water transport); Sea lock; Gate (water transport); Lock (ship); Ship locks; Mitre gate; Staircase locks; Shaft lock; Twin lock; Sluse; Sluser; Canal Lock; Lock gate; Lock navigation; Stop lock; Lock gates; Lock flight; Lock-chambers; Shipping lock; Lock chamber; Staircase lock; Lock (waterway); Lock (water transport); Lock (waterwat transport); Dock gate; Lock (water); Drop lock; Flight of locks; Lock flights; Lock paddle; Lock rise; Double lock
A lock is a device used for raising and lowering boats, ships and other watercraft between stretches of water of different levels on river and canal waterways. The distinguishing feature of a lock is a fixed chamber in which the water level can be varied; whereas in a caisson lock, a boat lift, or on a canal inclined plane, it is the chamber itself (usually then called a caisson) that rises and falls.
Lock (waltz)         
IN A WALTZ
Lock (Waltz); Back lock; Turning lock; Turning lock to right; Forward lock (waltz)
There are several types of lock step in waltz dancing, including International Standard waltz. A "lock step" is when the moving foot approaches to the standing foot and crosses in front of or behind it, creating a "check" position.
lock-keeper         
  • Lockkeeper's House]] on the [[National Mall]] in [[Washington, D.C.]] once housed the lockkeeper of the [[Washington City Canal]].
JOB RESPONSIBLE FOR MANAGING A LOCK
Lockkeeper; Lock operator; Lock tender; Lock-keeper; Lockkeeping
(lock-keepers)
A lock-keeper is a person whose job is to be in charge of and maintain a lock or group of locks on a canal.
N-COUNT

Wikipedia

Num Lock

Num Lock or Numeric 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 affects the function of the numeric keypad commonly located to the right of the main keyboard 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 cursor control or arrows separate from the numeric keypad. Most earlier computer keyboards had different number keys and cursor control keys; however, to reduce cost, IBM chose to combine the two in their early PC keyboards. Num Lock would be used to select 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 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. Keyboards manufactured by Apple will instead use a Clear key but not all Apple manufactured keyboards will be provided with it.