Is touch and display different?
The LCD is the inner layer of the screen, which is responsible for displaying images; the Touch Screen is the outer layer, which is responsible for precise positioning. The functions of the two are completely different, but they are generally integrated. That is to say, the screen is divided into at least two parts: the display part and the touch part. There are many categories of display technologies, such as TFT, AMOLED, etc. Touch technology is mainly divided into resistive type and capacitive type.
Interactive Blackboard, 178-degree ultra-wide viewing angle, Blackboard and Smat Tablet integrated design, using capacitive touch screen to support ordinary chalk, dust-free chalk and various pen writing, support for electronic whiteboard, theme and color energy can be changed at any time, Smart Blackboard is built-in Hundreds of useful tools such as page management, screenshots, pasting, magnifying glass, etc., are both blackboard and Multi-media Equipment. Contains a variety of Smart Board App, which can play teaching courseware, videos, pictures, animations and annotations. Teachers can teach more flexibly and prepare lessons easily without pressure.
Product Description
| Specification |
| Size | 75inch/1660(H)*934(V)mm |
| Windows | system | Windows 10 |
| CPU | Intel chipset 2nd generation and above Intel Core i3/i5/i7 |
| RAM | 4G DDR3 |
| Memory | 120G SSD |
| Windows OS | Windows 7/10 |
| Android | system | Android 8.0 |
| CPU | Cortex A53*4 1.5GHz |
| RAM | 2/3G |
| Memory | 8/16/32GB |
| Touch Info. | Touch Technology | Capacitive metal touch |
| Touch points | 10 / 20 points |
| Input way | Finger/capacitor pen |
| Touch life times | ＞100,000hrs（Typ) |
| Touch response speed | 8ms |
| Display Panel Info. | Display Type | LED |
| Resolution | 3840*2160 |
| Brightness | 350cd/㎡（Typ) |
| Ratio of display | 16:09 |
| Max. viewing angle | 178°(H)/178D°(V） |
| Contrast ratio | 1200:01:00 |
| Interface Info. | Support front power one-key switch |
| VGA signal input*1，Front TYBE-C*1，HDMI input*3 |
| Shared USB input*3, PC USB input*1 and Android USB input*1 |
| RJ45 input*1 and RJ45 output*1，RS232*1 |
| Front TOUCH USB-B output*1 and TOUCH USB-A output*1 |
| Other Info | Working voltage | 220v |
| Working temperature | 0~45℃ |
| Storage temperature | -25℃~60℃ |
| Working humidity | 5%-90% |
| Power of speaker | 8Ω15W*2 |
| Frame material | Alloy |
| Package | Product certificate, warranty card, laser pointer, microphone |
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