The LED(light-emitting diode) dot matrixscreen is constitute of computer, data transfer unit and display unit.
大型LED（发光二极管）显示屏由计算机、数据转换单元与显示单元组成。
2
The wearer stares at a computer screen, which flashes highlights over different rows in a matrix of letters and symbols set up like a keyboard on the screen.
戴头盔的人会盯着电脑屏幕，它会反射由不同的字母和符号组成的矩阵行的高光位，这就像屏幕上的键盘一样。
3
By flipping individual thin-film transistors on and off in a matrix of millions of transparent switching cells etched on to the surface of the display, images can be made to dance on the LCD screen.