2. PC standard configuration operating system Windows 7 64bit ultimate Android 8.0a73 * 2 + A53 * 264bit CPU to1 7GHz mp4gpu 4gbddr4 / up to 16gbrom + windows7 / 10 I3 generation / 8g / 258 solid state drive a main board Based on Bay trail, CPU integration Memory 4GB SO-DIMM DDR4 1600 MHz MAX:16GB Hard disk WD-SSD V2. 0 (160GB / SSD) 256gb Graphics card NVIDIA GeForce GT 730 sound card Intel 6 series chipset high fidelity audio network card RTL8168/8111 Gigabit Ethernet Controller Intel 5100 wireless network card Port parameters USB2. 0 port: 4 groups HDMI port: 1 group VGA port: 1 group RJ-45 network port: 1 group Line out port (green): 1 group Mic port (red): 1 group 3. Display parameters Display Size55/ 65/75/86/100 inches (16:9) Display manufacturer LG panel type Led liquid crystal display Screen display size 1428.48 (H) x 803.52 (V) Physical resolution 3840（H） × 2160（V）（Full HD） Display color 10bit, 1.07B Refresh rate 60HZ brightness 350cd/m2 contrast ratio 5000：1 Viewing angle (degrees) 178° Display screen protection 4mm fully tempered high explosion-proof glass Backlight life 50000 hours 4. TV parameters Image format PAL/SECAM/NTSC（Option） Voice System BG /DK /I/L Channel storage 200 decode 3D digital comb filter, 3D image motion noise reduction, 3D motion adaptive comb filter, etc Horn specification 18W / 8W × 2 SUBWOOFER SPEAKER Audio characteristics Balance, automatic volume control, surround sound, equalizer Input port AV port: 2 groups (1 group of three in one port) RF port: 1 group VGA port: 2 groups (front 1 group) Audio port: 2 groups (front 1 group) Touch port: 2 groups (front 1 group) HDMI port: 2 groups USB2. 0 port: 2 groups USB3. 0 port: 1 group Communication port RS232: one group 5. Touch parameters Touch embedding mode Built in integrated, non external Touch sensing technology Touch sensing recognition technology (10 points) Writing style Fingers, touch pens or other non transparent objects with a diameter of not less than 5mm (multi-point 8mm) positioning accuracy More than 90% of the touch area is ± 1mm communication interface Type a USB male Touch resolution 32767*32767 Touch times Theoretical infinity Computer response Automatic system identification; ≤15ms transmission speed 120Mbps Driver No need to install driver module, no need to calibrate