Hello, This is a circuit implemented on Proteus. I have already got the schematic capture of this circuit, and its' corresponding source code in c programming. But the problem is how to represent this circuit in Assembly Language. Here are some instructions or introductions about this circuit.

The core of this circuit is to print digits(0-9) on the LCD screen by using the switches(SW0, SW1,..., SW9).

However, every time you want to print one digit, you have to click the blue logic toggle first. For example, if you want to print "2020" on the LCD screen, you have to: click logic toggle, click SW2 -> click logic toggle, click SW0 -> click logic toggle, click SW2 -> click logic toggle, click SW0.

This circuit is based on 8051 microcontroller, and the components that used here are

Here is the schematic capture:

7SEG-BCD 9C04021A1800JLH 74HC4002 80C51 02013A180 JAT2A CRYSTAL EPOS0805X7R1001 KEYPAD-CALCULA LED-BLUE LMO16L LOGICTOGGLE POT-HG RES10SIPB SW-SPDT SW-SPDT-MOM SW-SPST SW-SPST-MOM [74HC4002] [74HC4072] +5V 4 +5V A R11 180 R21|| R31 180 180 R41 180 RV1 RIO RO LCD1 LMO16L :1 SI 1k +5V 4 SW7 SW8 SW9 RN2 10k R4 No SW-SPST-MON SW-SPST-MON LED-BLUE LIONS RN1 10K SW4 SW5 SW6 R3 U1 -sv SW-SPST-MON SW-SPST-MON SW-SPST-MOM 19 CRYSTAL1 >> XTAL1 39 38 SW1 SW2 $7 SW3 18 CRYSTAL2 > XTAL2 R2 PO.O/ADO PO.1/AD1 PO.2/AD2 PO.3/AD3 PO.4/AD4 P0.5/AD5 P0.6/AD6 PO.7/AD7 20 SW-SPST-MOM SW-SPST-MON 36 35 34 33 32 SW-SPST-MOM 9 RST SWO R1 21 22. 1 180 23 29 30 31 P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15 PSEN ALE EA X 24 25 26 27 28 CRYSTAL1 A A CRYSTAL2 U2:A 5 4 R1 Rz intr 10 X1 R1 R2 R3 R4 C1 C2 C3 04 1 2 3 4 5 6 7 8 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 10 11 12 13 14 15 16 17 P3.0/RXD P3.1/TXD P3.2/INTO P3.3/INT1 P3.4/TO P3.5/T1 P3.6/WR P3.7/RD 3 2 H R3 R 74HC4002 FREQ=11.059 CRYSTAL ITR1 180 80051 C1T 18pF C2 18pF +5V - 7SEG-BCD 9C04021A1800JLH 74HC4002 80C51 02013A180 JAT2A CRYSTAL EPOS0805X7R1001 KEYPAD-CALCULA LED-BLUE LMO16L LOGICTOGGLE POT-HG RES10SIPB SW-SPDT SW-SPDT-MOM SW-SPST SW-SPST-MOM [74HC4002] [74HC4072] +5V 4 +5V A R11 180 R21|| R31 180 180 R41 180 RV1 RIO RO LCD1 LMO16L :1 SI 1k +5V 4 SW7 SW8 SW9 RN2 10k R4 No SW-SPST-MON SW-SPST-MON LED-BLUE LIONS RN1 10K SW4 SW5 SW6 R3 U1 -sv SW-SPST-MON SW-SPST-MON SW-SPST-MOM 19 CRYSTAL1 >> XTAL1 39 38 SW1 SW2 $7 SW3 18 CRYSTAL2 > XTAL2 R2 PO.O/ADO PO.1/AD1 PO.2/AD2 PO.3/AD3 PO.4/AD4 P0.5/AD5 P0.6/AD6 PO.7/AD7 20 SW-SPST-MOM SW-SPST-MON 36 35 34 33 32 SW-SPST-MOM 9 RST SWO R1 21 22. 1 180 23 29 30 31 P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15 PSEN ALE EA X 24 25 26 27 28 CRYSTAL1 A A CRYSTAL2 U2:A 5 4 R1 Rz intr 10 X1 R1 R2 R3 R4 C1 C2 C3 04 1 2 3 4 5 6 7 8 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 10 11 12 13 14 15 16 17 P3.0/RXD P3.1/TXD P3.2/INTO P3.3/INT1 P3.4/TO P3.5/T1 P3.6/WR P3.7/RD 3 2 H R3 R 74HC4002 FREQ=11.059 CRYSTAL ITR1 180 80051 C1T 18pF C2 18pF +5V