| Experiment 1: P1 port light up experiment | P1.0~P1.7→L1~L8（led） |
| Experiment 2: P1 turn signal experiment | P1.0→K1,P1.1→K2 P1.4→L1,P1.5→L2,P1.6→L5,P1.7→L6 |
| Experiment 3: P3.3 port input, P1 port output | P3.3→K1 P1.0~P1.7→L1~L8（led） |
| Experiment 4 Industrial Sequential Control | P3.4 →K1,P3.3→K2 P1.0~P1.6→L1~L7,P1.7→VIN，JP short circuit block connected to ON (audio amplifier) |
| Experiment 5 8255 A, B, C port output square wave | Without any connection, observe the square wave output from PA, PB and PC ports |
| Experiment 6 8255 PA port controls PB port | PA0~PA7→K1~K8，Q0~Q7→L1~L8 |
| Experiment 7 8255 Control Traffic Light | 8255 PA0～PA7 Connect the light emitting diodes in sequence L7～L5、L3～L1 |
| Experiment 8 Simple I/O Expansion | Y0~Y7 connects to K1~K8, Q0~Q7 connects to L1~L8, CS1 connects to FF80H, CS2 connects to FF90H hole, JX0 connects to JX7 (D0~D7) |
| Experiment 9 A/D conversion experiment | IN0→VOUT，VIN→+5V，CS4→FF80H，JX0→JX6 WR→IOWR，RD→IORD，ADDA、ADDB、ADDC→0V（Grounding） |
| Experiment 10 D/A conversion experiment | CS5→FF80H，JX2→JX0，WR→IOWR，AOUT→Voltmeter |
| Experiment 11 8279 keyboard display experiment | CS6→FF80H，JRL→JR，JSL→JS，JOUT→JLED SW3, SW4, SW5 are set to OFF (set to ON after the experiment) |
| Experiments 12 and 13 (Printer) | Special cable connects CZ4 (PRT) to micro printer interface (optional) |
| *Experiment 14 Calendar clock DS12887 control experiment | CZ7 (mainboard) → CZ1 (MC3), P3.2 → /IRQ (MC3) (optional) |
| Experiment 15 I2C memory card reading and writing experiment | P3.0→SCL,P3.1→SDA,INS→P1.0,P1.0~P1.2→L1~L3(Light Emitting Tube) |
| Experiment 16 ISD1730 Recording | See the experimental instructions below. |
| Experiment 17 ISD1730 playback | Same as Experiment 16 |
| Experiment 18 Relay Control | P1.0→JIN，JZ→Grounding，JK→L1，JB→L2 |
| Experiment 19: Stepper Motor Control | P1.0~P1.3→HA~HD |
| Experiment 20 8253 Square Wave | CLK0→2 MHZ，GATE0→5V，CS3→FF80H，Connect OUT0 to an oscilloscope, run the program, and observe whether the oscilloscope has a square wave output. |
| Experiment 21: Closed-loop speed regulation experiment of small DC motor | P1.0~P1.7----->K8~K1；（The DC motor speed can be set through K1~K8, the number of turns/S, hexadecimal input） P3.2----->HOUT（DC Motor Sensor Output）； CS5----->FF80H， AOUT----->DJ WR----->/IOWR, JX2----->JX0。 Run the program: the digital tube displays "set speed value - - current speed value"! Note: Do not set the turns/S value too high, because the actual speed of a small DC motor is about 1F/S. |
| Experiment 22 LED 16*16 dot matrix display experiment | JLPC→JX16，JHP1→JX10，JLPA→JX9，JLPB→JX15 |
| Experiment 23 128*64 LCD display experiment | JX10→JX12，JX11→JX14，/RST→/RST |
| Experiment 24 8250 programmable asynchronous communication interface experiment (self-transmission and self-reception) | JX0→JX3，CS7→FF80H，TXD→RXD |
| Experiment 25 8251 programmable communication interface experiment (with PC) |
(1) 8251 unit: CS8→FF80H, CLK→1.8432M, T/RXC→OUT1, TXD→EX-TXD, RXD→EX-RXD, JX20→JX17; (Note: TXD and RXD are in the 8251 unit; EX-TXD and EX-RXD are in the CZ11 user communication port, and the corresponding numbers are TXD and RXD) (2) 8253 unit: CS3→FF90H, GATE1→+5V, CLK1→1.8432M; (3) Switch settings: Set SW3, SW4, and SW5 to ON, and connect the PC serial port to the CZ11 user communication port socket (offline operation, no emulator is required, and the PC must have two serial ports for online operation); (4) Run the "Serial Port Debug Assistant", set the corresponding serial port and baud rate (9600), type 25 in P mode and press the F0/EX execution key, the display will flash P, press the numeric keys on the small keyboard, and the corresponding numbers will be displayed on the PC screen, and press MON to return to P mode. |
| Experiment 26 MCU RS232 / RS485 serial transmission experiment (dual machine communication) | (1) Prepare two microcomputer principle test boxes and determine that machine 1 is for sending and machine 2 is for receiving; (2) When used as an RS232 interface experiment: P3.0 and P3.1 of machine 1 and machine 2 are cross-connected, and the two machines share the same ground. (3) When used as an RS485 interface experiment, P3.0→R0, P3.1→DI, K1→TEN/R (switch K1, when the switch is at a high level, it is "sending"; when the switch is at a low level, it is "receiving"). A and B pairs of machine 1 and machine 2 should be connected with wires, and the two machines share the same ground. (4) Run machine 2 first, so that machine 2 is in the standby receiving state P. Then run machine 1, so that machine 1 is in the sending state P. Press the number key on the keyboard of machine 1, and the corresponding number key value should be displayed on the digital tube of machine 2. |
| Experiment 27 MCU RS232 / RS485 serial reception experiment (dual machine communication) | Experimental connection is the same as Experiment 26 |
| Experiment 28 Intelligent temperature measurement experiment based on DS18B20 | P1.0→DQ |
| Experiment 29 Infrared communication experiment in single chip microcomputer system |
P3.2→HOUT，P1.5→SP(buzzer) |
| Experiment 30 TL549 serial A/D conversion experiment | (AIN) analog input channel is connected to the potentiometer VOUT hole with a wire, the potentiometer input terminal VIN is connected to +5V, I/O CLOCK (CLK) is connected to P1.6, DATA OUT (DO) is connected to P1.7, CS is connected to P1.0 |
| Experiment 31 TLC5615 10-bit D/A serial conversion experiment | DIN→P1.2， SCLK→P1.1,/CS→P1.0,OUT→DJ |
| Experiment 32 PCF8563 real-time clock/calendar chip experiment |
SDA→P1.7, SCL→P1.6, K1→P1.0, when P1.0 is at a low level, the digital tube displays "hour, minute, second"; when P1.0 is at a high level, the digital tube displays "year, month, day". |
| Experiment 33 MAX813L watchdog reset circuit experiment | For detailed experimental connections, please refer to the experimental instructions. |
| Experiment 34 LM331 voltage/frequency conversion experiment | VIN0 is connected to the VOUT hole of the potentiometer, the input terminal VIN of the potentiometer is connected to +5V, and the frequency output terminal FOUT is connected to P3.5 |
| Experiment 35: Serial memory chip 93C46 reading and writing experiment | P3.0→CS，P3.1→SK，P3.2→DI，P3.3→DO P1.0~P1.7→L1~L8（led） |
| Experiment 36 AT24C02 I2C bus memory read and write experiment | SCL→P1.6, SDA→P1.7, P1.0→L1 (write indicator), P1.1→L2 (read indicator), A0, A1, A2 are grounded. |
| Experiment 37 PWM pulse width modulation experiment | PWM_IN→P1.7，V_OUT→DJ（Small DC motor） |
| Experiment 38 74LS164 serial-to-parallel conversion | P3.0→A/B，P3.1→CP，P1.0→CLR，Call in the program and run it, and the two-digit digital tube will display numbers 00~99 in a cycle. |
| Experiment 39 165 parallel-to-serial conversion experiment |
P1.0~P1.7→D7~D0，P3 .0→Q7，P3.1→CLK(CP)，P3.2→S/L, CKIN→GND。 |
| Experiment 40 Electronic music performance experiment |
P1.5→SP (buzzer) or P1.5→VIN (speaker, audio amplifier unit) |
| Experiment 41 Temperature and pressure experiment |
CS4→FF80H, JX0→JX6, WR→/IOWR, RD→/IORD, ADDA, ADDB, ADDC→0V (ground) Temperature test: IN0→VT Pressure test: IN0→VP |
