Troubleshooting Digital Circuit
... A circuit board using TTL or CMOS logic chips can often be implemented in a single PLD Unfortunately many manufacturers do not document the relationship between the inputs and outputs of a PLD. Undocumented PLD is impossible to troubleshoot since it is programmed by the manufacturer. ...
... A circuit board using TTL or CMOS logic chips can often be implemented in a single PLD Unfortunately many manufacturers do not document the relationship between the inputs and outputs of a PLD. Undocumented PLD is impossible to troubleshoot since it is programmed by the manufacturer. ...
Logical Design Design with Basic Logic Gates
... Serial-to-parallel converter: distributes a sequence of binary digits on a serial input to a set of different outputs, as specified by external control signals C2 ...
... Serial-to-parallel converter: distributes a sequence of binary digits on a serial input to a set of different outputs, as specified by external control signals C2 ...
XR250 351
... Continuous supervision with the circuit breaker in the open and closed positions and in compliance with the scheme requirements of BEBS S15 scheme H7. XR350 and XR351 relays also have a contact for pre-closing supervision, where a circuit breaker is prevented from being closed if trip relays have no ...
... Continuous supervision with the circuit breaker in the open and closed positions and in compliance with the scheme requirements of BEBS S15 scheme H7. XR350 and XR351 relays also have a contact for pre-closing supervision, where a circuit breaker is prevented from being closed if trip relays have no ...
File
... Here is 10 output LED sequencer. After the last LED is illuminated, the circuit is reset. This circuit is build around readily a low cost components - a 555 and decade counter CD4O1 7. The timer IC NE555 is wired as an astable multivibrator that produces 6Hz clock at its output pin 3. The 4017 is a ...
... Here is 10 output LED sequencer. After the last LED is illuminated, the circuit is reset. This circuit is build around readily a low cost components - a 555 and decade counter CD4O1 7. The timer IC NE555 is wired as an astable multivibrator that produces 6Hz clock at its output pin 3. The 4017 is a ...
Integrated circuit
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small plate (""chip"") of semiconductor material, normally silicon. This can be made much smaller than a discrete circuit made from independent electronic components. ICs can be made very compact, having up to several billion transistors and other electronic components in an area the size of a fingernail. The width of each conducting line in a circuit can be made smaller and smaller as the technology advances; in 2008 it dropped below 100 nanometers, and has now been reduced to tens of nanometers.ICs were made possible by experimental discoveries showing that semiconductor devices could perform the functions of vacuum tubes and by mid-20th-century technology advancements in semiconductor device fabrication. The integration of large numbers of tiny transistors into a small chip was an enormous improvement over the manual assembly of circuits using discrete electronic components. The integrated circuit's mass production capability, reliability and building-block approach to circuit design ensured the rapid adoption of standardized integrated circuits in place of designs using discrete transistors.ICs have two main advantages over discrete circuits: cost and performance. Cost is low because the chips, with all their components, are printed as a unit by photolithography rather than being constructed one transistor at a time. Furthermore, packaged ICs use much less material than discrete circuits. Performance is high because the IC's components switch quickly and consume little power (compared to their discrete counterparts) as a result of the small size and close proximity of the components. As of 2012, typical chip areas range from a few square millimeters to around 450 mm2, with up to 9 million transistors per mm2.Integrated circuits are used in virtually all electronic equipment today and have revolutionized the world of electronics. Computers, mobile phones, and other digital home appliances are now inextricable parts of the structure of modern societies, made possible by the low cost of integrated circuits.