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Hornby Railways Zero 1 was a forerunner to the modern digital model railway control system, developed by Hornby in the late 1970s. It was based around the TMS1000 four-bit microprocessor. The Zero 1 system enabled the simultaneous control of up to 16 locomotives and up to 99 accessories such as points and signals.
A touch switch is a type of switch that only has to be touched by an object to operate. It is used in many lamps and wall switches that have a metal exterior as well as on public computer terminals. A touchscreen includes an array of touch switches on a display. A touch switch is the simplest kind of tactile sensor.
timers, missing pulse detection, bounce-free switches, touch switches, frequency dividers, triggered measurement of resistance or capacitance, PWM, etc. Bistable (latch) mode – The 555 operates as a set-reset latch. Applications include: switch debouncing. Schmitt trigger (inverter) mode – the 555 operates as a Schmitt trigger inverter gate ...
On-state V CA drops to around 2 V, which is compatible with Transistor–transistor logic (TTL) and CMOS logic gates with 5 V power supply. [40] Low-voltage CMOS (e.g. 3.3 V or 1.8 V logic) requires level conversion with a resistive voltage divider , [ 40 ] or replacing the TL431 with a low-voltage alternative like the TLV431.
Early solid-state pinball machines made use of these to control lights, solenoids, and other functions electronically, instead of mechanically, hence the name solid-state. Other applications include power switching circuits, controlled rectifiers, speed control of DC shunt motors, SCR crowbars, computer logic circuits, timing circuits, and ...
A switch may be directly manipulated by a human as a control signal to a system, such as a computer keyboard button, or to control power flow in a circuit, such as a light switch. Automatically operated switches can be used to control the motions of machines, for example, to indicate that a garage door has reached its full open position or that ...
A two-terminal device (e.g., a diode), whose state is completely dependent on the external power circuit to which it is connected. A three-terminal device (e.g., a triode), whose state is dependent on not only its external power circuit, but also the signal on its driving terminal (this terminal is known as the gate or base). A four terminal ...
1:10 scale radio-controlled car (Saab Sonett II)A radio-controlled model (or RC model) is a model that is steerable with the use of radio control (RC). All types of model vehicles have had RC systems installed in them, including ground vehicles, boats, planes, helicopters and even submarines and scale railway locomotives.
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