In engineering, electromechanics combines the sciences of electromagnetism of electrical engineering and mechanics. Mechatronics is the discipline of engineering that combines mechanics, electronics and information technology. Engineering is the application of science to the needs of humanity. ... What is science? There are different theories of what science is. ... Electromagnetism is the physics of the electromagnetic field: a field, encompassing all of space, composed of the electric field and the magnetic field. ... Electrical engineering is an engineering discipline that deals with the study and application of electricity and electromagnetism. ... Mechanics refers to: a craft relating to machinery (from the Latin mechanicus, from the Greek mechanikos, meaning one skilled in machines), or a range of disciplines in science and engineering. ... A tipical mechatronics diagram, Mechatronics is the synergetic combination of several enginnering disciplines. ... Mechanics refers to: a craft relating to machinery (from the Latin mechanicus, from the Greek mechanikos, meaning one skilled in machines), or a range of disciplines in science and engineering. ... Electronics is the study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. ... Categories: Information technology ...

Electromechanical devices are those that combine electrical and mechanical parts. These include electric motors and mechanical devices powered by them, such as calculators and adding machines; switches, solenoids, relays, crossbar switches and stepping switches. A motor is a device that converts energy into mechanical power, and is often synonymous with engine. ... A basic arithmetic calculator. ... An adding machine is a type of calculator. ... Electrical switches. ... In engineering, a solenoid is a mechanical device that converts energy into linear motion. ... Automotive style miniature relay A relay is an electrical switch that opens and closes automatically under control of another electrical circuit. ... A crossbar switch is an electromechanical device for switching telephone calls. ... In electrical controls, a stepping switch (also called a uniselector; see Strowger switch, below) is an electromechanical device used, most prominently, in early automatic telephone exchanges to route calls. ...

Early on, "repeaters" originated with telegraphy and were electromechanical devices used to regenerate telegraph signals. The telephony crossbar switch is an electromechanical device for switching telephone calls. They were first widely installed in the 1950s in both the United States and England, and from there quickly spread to the rest of the world. They replaced most earlier designs like the Strowger switch in larger installations. Early on, Nikola Tesla, one of the great engineers, pioneered the field of electromechanics. For the album by the post-hardcore band Fugazi, see Repeater (album). ... Telegraphy (from the Greek words tele = far away and grapho = write) is the long-distance transmission of written messages without physical transport of letters, originally over wire. ... central office = Exchange building in the U.S. telephone exchange = Exchange building in the UK, and is also the UK name for a telephone switch, and also has a technical meaning in U.S. telecoms telephone switch is the U.S. term, but is in increasing use in technical UK... A telephone handset A touch-tone telephone dial Telephone Complex relay used in a telephone switching system. ... Millennia: 1st millennium - 2nd millennium - 3rd millennium Events and trends The 1950s in Western society was marked with a sharp rise in the economy for the first time in almost 30 years and return to the 1920s-type consumer society built on credit and boom-times, as well as the... Royal motto: Dieu et mon droit (French: God and my right) Englands location within the UK Official language English de facto Capital London de facto Largest city London Area  - Total Ranked 1st UK 130,395 km² Population  - Total (2001)  - Density Ranked 1st UK 49,138,831 377/km² Religion... Almon Brown Strowger (1839 - May 26, 1902) gave his name to the electromechanical telephone exchange technology that his invention and patent inspired. ... Nikola Tesla was an inventor, and electrical engineer. ...

Paul Nipkow proposed and patented the first electromechanical television system in 1885. Electrical typewriters developed, up to the 1980s, as "power-assisted typewriters." They contained a single electrical component in them, the motor. Where the keystroke had previously moved a typebar directly, now it engaged mechanical linkages that directed mechanical power from the motor into the typebar. This was also true of the forthcoming IBM Selectric. At Bell Labs, in the 1940s, the Bell Model V computer was developed. It was an electromechanical relay-based monster with cycle times in seconds. In 1968 Garrett Systems were invited to produce a digital computer to compete with electromechanical systems then under development for the main flight control computer in the US Navy's new F-14 Tomcat fighter. Paul Gottlieb Nipkow (August 22, 1860 - August 24, 1940) was a German engineer, who devised a mechanical apparatus, a spinning disk to scan images that was used in early television. ... 1885 is a common year starting on Thursday. ... This Smith Premier typewriter, purchased around the end of the 19th century, was found abandoned in the Bodie ghost town. ... Garrett Engine Boosting Systems is a subsidiary of Honeywell Corporation. ...

Today, though, common items which would have used electromechanical devices for control, today use, less expensive and more effectively, a standard integrated circuit (containing a few million transistors) and write a computer program to carry out the same task through logic. Transistors have replaced almost all electromechanical devices, are used in most simple feedback control systems, and appear in huge numbers in everything from traffic lights to washing machines.

See also

• Linear feedback shift register
• Adding machine
• Kerrison Predictor
• Thermostat
• Automatic transmission system
• Power engineering
• Power conversion
• Torpedo Data Computer
• Power rating
• Stepping switch
• Robotic telescope
• Electricity meter
• Solenoid valve