What is the dot matrix graphics LCD module in the LCD display module?

What is the dot matrix graphics LCD module in the LCD display module?

  The dot matrix graphics LCD module in the LCD display module is also a kind of lattice module, which is characterized by continuous arrangement of dot matrix pixels, row and column in the arrangement are not empty. So you can display a continuous, complete graphics. Since it also has X-Y matrix pixels, so in addition to display graphics, but also can display characters.

  (1) Row, column drive type

This is a module that must be dedicated to the external controller, the module is only equipped with a common row, column driver, this drive is actually only the general drive output of the pixel, and the input is generally only 4 or less data input , Shift signal input, latch input, AC signal input, such as HD44100, IID66100 and so on. This module must be external control circuit, such as HD61830, SEDl330, etc. to connect with the computer. The largest number of modules, the most common. Although the need to use self-controller, but it also left to the customer can choose their own different freedom of the controller.

  (2) Row, column drive - control type

This is a direct connection with the computer, relying on the computer directly control the driver of the LCD display module. The column driver used by this module has an I / O bus data interface that can be linked directly to the computer's bus, eliminating the need for a dedicated controller, thus reducing the cost of the machine system. For the small number of pixels, machine function is not much, the computer software programming and very familiar with the user is very applicable. But it will take up part of your system resources.

(3) Row, column control type

This is a built-in controller type dot matrix graphics module. Is also a more popular type. This LCD display module is not only equipped with a first type of row, column driver, but also equipped with special controllers such as T6963C. This controller is the LCD driver and the computer interface, it is the easiest way to control the computer, receive and feedback computer information, through their own independent information processing to achieve the display buffer management, well to provide the drive The required signal, pulse, manipulate the drive to achieve the module display function. This controller has its own set of dedicated instructions, and has its own character generator CGROM. Users must be familiar with the details of this controller in order to carry out the masterpiece. This LCD display module allows users to get rid of the controller design, processing, production and a series of work, but also to avoid the computer to the cumbersome control of the display, saving the host system internal resources.