A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees...

A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals...

The Prague astronomical clock or Prague Orloj (Czech: Pražský orloj [praʃskiː orloj]) is a medieval astronomical clock attached to the Old Town Hall in...

82639°E / 21.41889; 39.82639 The Clock Towers (Arabic: أبراج الساعة, romanized: ʾAbrāj al-Sāʿaẗ, lit. 'Towers of the Clock', formerly known as Arabic: أبراج...

A water clock or clepsydra (from Ancient Greek κλεψύδρα (klepsúdra) 'pipette, water clock'; from κλέπτω (kléptō) 'to steal' and ὕδωρ (hydor) 'water';...

mechanical clock. It continues ticking along, as a perfect machine, with its gears governed by the laws of physics, making every aspect of the machine predictable...

Clock towers are a specific type of structure that house a turret clock and have one or more clock faces on the upper exterior walls. Many clock towers...

alarm clock or alarm is a clock that is designed to alert an individual or group of people at a specified time. The primary function of these clocks is to...

An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms. It is based on atoms having different energy levels. Electron...

In electronics and especially synchronous digital circuits, a clock signal (historically also known as logic beat) is an electronic logic signal (voltage...

Sony Dream Machine was Sony's long-running line of clock radios. The line was introduced in the early 1960s and ran until the early 2010's. In the mid...

clock (also a longcase clock, tall-case clock, grandfather's clock, hall clock or floor clock) is a tall, freestanding, weight-driven pendulum clock,...

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms...

astronomical clock or Brno astronomical clock, it has a reputation for its phallic appearance. Officially, it's known as a clockwork machine (hodinový stroj)...

A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it...

Clock synchronization is a topic in computer science and engineering that aims to coordinate otherwise independent clocks. Even when initially set accurately...

A machine is a physical system that uses power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices...

A shot clock is a countdown timer used in a variety of games and sports, indicating a set amount of time that a team may possess the object of play before...

A Japanese clock (和時計, wadokei) is a mechanical clock that has been made to tell traditional Japanese time, a system in which daytime and nighttime are...

Pat Simmons speaking clock. Around 75 electronic speaking clocks with the Pat Simmons voice were sold. The Speaking Clock machine that was used by Pat...

Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. This crystal oscillator creates...

radio clock or radio-controlled clock (RCC), and often colloquially (and incorrectly) referred to as an "atomic clock", is a type of quartz clock or watch...

1176400°E / 52.2037600; 0.1176400 The Corpus Clock, also known as the Grasshopper clock, is a large sculptural clock at street level on the outside of the Taylor...

A clock generator is an electronic oscillator that produces a clock signal for use in synchronizing a circuit's operation. The signal can range from a...

when used in calculating clocks. Schickard's machine was the first of several designs of direct entry calculating machines in the 17th century (including...

digital audio tape machines and compact disc players, which interconnect via digital audio signals. Word clock is so named because it clocks each audio sample...

non-electronic moving machines, especially those that have been made to resemble human or animal actions, such as the jacks on old public striking clocks, or the cuckoo...

"Rock Around the Clock" is a rock and roll song in the 12-bar blues format written by Max C. Freedman and James E. Myers (the latter being under the pseudonym...

practice of advancing clocks to make better use of the longer daylight available during summer so that darkness falls at a later clock time. The typical implementation...

The Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data...