latch


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latch

1. a fastening for a gate or door that consists of a bar that may be slid or lowered into a groove, hole, etc.
2. a spring-loaded door lock that can be opened by a key from outside
3. Electronics a logic circuit that transfers the input states to the output states when signalled, the output thereafter remaining insensitive to changes in input status until signalled again

latch

[lach]
(electronics)
An electronic circuit that reverses and maintains its state each time that power is applied.
(engineering)
Any of various closing devices on a door that fit into a hook, notch, or cavity in the frame.
In plastics fabrication, a device used to hold together the two members of a mold.
(mining engineering)
To make an underground survey with a dial and chain, or to mark out upon the surface, with the same instruments, the position of the workings underneath.

latch

A simple fastening device having a latch bolt, but not a dead bolt; contains no provisions for locking with a key; usually openable from both sides.

latch

A digital logic circuit used to store one or more bits. A latch has a data input, a clock input and an output. When the clock input is active, data on the input is "latched" or stored and transfered to the output either immediately or when the clock input goes inactive. The output will then retain its value until the clock goes active again.

See also flip-flop.

latch

An electronic circuit that maintains one of two states. See flip-flop.
References in periodicals archive ?
For residents, Latch offers the simplest way to unlock every door at their building, manage who has access to their space, and share access with friends, family, and a host of new Latch-enabled services.
It is possible that the stainless steel latch could, inadvertently, close where a person could potentially become locked inside.
The latches are delivered with the lock enclosed separately.
Southco is the leading and trusted global source for engineered access hardware solutions, including a variety of latches, locks, captive fasteners, quick access fasteners, hinges, handles, inserts, electronic access solutions, and other accessories for applications in the networking, telecommunications, computer, automotive, aerospace, mass transit, off-highway/construction, medical, RV/caravan, industrial machinery, marine and HVAC industries.
To begin the reassembly, take an ordinary hex screwdriver with no bit installed and slide it over the stub tail of the mainspring housing latch. This provides the ability to steer the lever where needed.
Every latch utilizes a pulsed clock signal which is delayed from the pulsed clock signal used in the next latch [9].
'Based on feedback we get, mothers now are having a hard time doing it,' said Mogol who started peer counseling for Latch in 2011.
Denise Henderson, general manager of Latch, said: "We're grateful for this generous grant from the Echo Trust and Pryzm.
A group of 37 mums met at Stewart Park, Marton, Middlesbrough, to join women from around the globe who had come together for World Breastfeeding Week (August 1-7) to latch on their child at a set time to raise awareness of breastfeeding support and knowledge available in communities.
The celebration is part of a global event where groups of breastfeeding women come together at registered locations around the world to all latch on their child at a set time.
The automaker said Friday that a part in the door latch spring assembly can break, causing the latch to fail.
The company will proactively inspect and replace the " right hand door latch assembly" of 19,780 units of Alto 800 and 13,318 units of Alto K10, MSIL said in a statement.