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A Charlieplexed digital clock which controls 90 LEDs with 10 pins of a PIC 16C54 microcontroller.. Charlieplexing (also known as tristate multiplexing, reduced pin-count LED multiplexing, complementary LED drive and crossplexing) is a technique for accessing a large number of LEDs, switches, micro-capacitors or other I/O entities, using relatively few tri-state logic wires from a microcontroller.
Many software packages can read and display the EDID information, such as read-edid [2] for Linux and DOS, PowerStrip [3] for Microsoft Windows and the X.Org Server for Linux and BSD unix. Mac OS X natively reads EDID information and programs such as SwitchResX [ 4 ] or DisplayConfigX [ 5 ] can display the information as well as use it to ...
Dual 16-bit address bus; it can access 2 × 2 16 memory locations: 64 KB (65,536 locations) each of ROM (PMEM) and external RAM (XRAM), using two memory buses in a Harvard architecture. On-chip ROM (not included on 803x variants) Four (three full) 8-bit bidirectional input/output ports, bit-addressable; UART (serial port) Two 16-bit counters/timers
+9.5–12 V → on/4:3; Pin 9: RGB Green ground (pin 11 ground) Pin 10: Clock / Data 2 Control bus (AV.link) Pin 11: RGB Green up Component Y up: Pin 12: Reserved / Data 1: Pin 13: RGB Red ground (pin 15 ground) Pin 14: Usually Data signal ground (pins 8, 10 & 12 ground) Pin 15: RGB Red up S-Video C up Component P R up: Pin 16: Blanking signal ...
Switching uses different kinds of network switches. A standard switch is known as a layer-2 switch and is commonly found in nearly any LAN. Layer-3 or layer-4 switches require advanced technology (see managed switch) and are more expensive and thus are usually only found in larger LANs or in special network environments.
Switch access is the use of one or more switches to operate computers and other devices and is primarily used by people with severe physical or cognitive impairment. A switch is an assistive technology device that replaces the need to use a computer keyboard or a mouse .
Twinaxial plug (style used by IBM; [1] other designs exist [2]) Twinaxial cabling, or twinax, is a type of cable similar to coaxial cable, but with two inner conductors in a twisted pair instead of one. [3] Due to cost efficiency it is becoming common in modern (2013) very-short-range high-speed differential signaling applications.
Layers 3–6 are not used. [1] When sent over 4–20 mA it uses a Bell 202 for layer 1. But it is often converted to RS485 or RS232. According to Emerson, [2] due to the huge installation base of 4–20 mA systems throughout the world, the HART Protocol is one of the most popular industrial protocols today. HART protocol has made a good ...
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