1.3 LCD Interactive Electronic Touch Machine G90 1. Technology Requirement of Hardware: 1) Display Size: 75 inches LED LCD screen. 2) Writing Technology: Infrared induction technology, min. 10-points touch. No need of special pen, writing by fingers or any other opaque object directly on the surface. 3) Support HID drive-free technology: Under Windows system, completely compatible to Windows multipoint protocol, point while touch, no interferes on each other. 4) Detachable touch screen: The touch frame with detachable button design, disassemble from front, no need to dissemble any screws or protection angles during maintenance. 5) Response speed: 1st point8ms,continious writing3ms,positioning accuracy1mm 6) Display scale: 16:9 7) Resolution: 1920x1080 (full HD) 8) Brightness: 450 9) Contrast: 2000:1 10) Visual angle: 178° 11) Sound output power: 2*15W 12) Video formats: PAL/SECAM 13) Front interface: 6-path USB (of which PC USB*4, USB touch*1TV USB*1)VGA input*1AUDIO input*1MIC input*1HDMI input*1. 14) Input port: 2-path AV (VIDEO+R+L), 1-path RF, 2 HDMI, 1-path VGA/audio 15) Output port: 1-path AV/audio 1-path TV stereo audio output 2-path USB power supplyAC100-240V 50/60 Hz 16) Peripheral interface: 4 USB 2.0 port, 1 audio line input, 1 audio line output, 1 net interface, HDMI output 17) Power supply requirement AC220V±15% 50/60HZ ultra-low power consumption: 80 W. 18) PC configuration requirement With modularization design of computer, when the computer has malfunctions, the computer can be maintenance by plug type. To guarantee the compatibility, the computer module adopts to standard OPS-C structure, connection through standard 80-core OPS port with other devices. Port: 2-path USB2.02-path USB 3.01-path RJ45 network port, 1-path HDMI, 1-path LINE output, 1-path MIC input, support wifi. Machine appearance: Aluminum alloy front housing, circular arc safe plastic corner, light and thin design, thickness of the whole machine 29.7mm, thickness of computer position 67.7mm (thickest) Touch structure: touch screen PCBA part can be maintained by disassemble the infrared filter directly, no need to disassemble the front frame and corner or any other accessories. Display module: adopt 65 inch LED LCD display, brightness 350cd/m2, highest resolution 1920(horizontal)x1080(vertical) USB key at the front, dion cover key, dust proof and sweat proof design