1. The LCD's purity and quality is good 2. 4-board LED, a blue backlight, light uniformity 3. PCB Size: 45 (mm) x 45 (mm) 4. The corners were positioning holes, along with two rows of the upper and lower connection port, ranked as follows:    VCC - power input (3.3v and 5v available)    GND - Ground    SCE - Chip Select    RST - Reset    D \ C - data / instruction selection    DN - Serial Data Line    CLK - Serial Clock Line    LED - backlit console 5. Provides the following drivers:    NOKIA5110 FOR 51 (keil c)    NOKIA5110 FOR PIC (picc)    NOKIA5110 FOR AVR (gcc)    NOKIA5110 FOR STM32 (keil for arm)    NOKIA5110 FOR MSP430     NOKIA5110 FOR LPC2148