JDM PROGRAMMER FOR PIC MICRO-CONTROLLER

PS: Please disscuss how the circuits works :)

31 GND RS BK U1 TxD 1 RAZ RAILB RTS TxD CTS DIR RA3 R8-17 CTS BC547 Vpp 3 16 [R4/TBDK] OSC1 CLKIN D1 4 MCLR/Vtm Ri GND 1 N4] 48 5 Vss DTR OSC2 CLKOUT 15 Vdd 14 RBZ DATA 13 RB6 CLOCK 12 47R 6 RBO ]nt DATA DE-9 Female 7 RBI "RTS RB2 RB5 11 WBC547 RB3 RB4 10 021 R4 16F84 an 467 JR6 OK GND J2 1N4148 8v2 R3 3470R R2 547R GND OL5v 02 Ov ci Vpp 03 Vpp D8 .C2 D5 D3 Det DATA -04 Data 1 Ou 22u 56] 1 N4148 RIS 05 Clock D2 K ] SP LED 5V LED Pgm LED CIK I N4148 31 GND RS BK U1 TxD 1 RAZ RAILB RTS TxD CTS DIR RA3 R8-17 CTS BC547 Vpp 3 16 [R4/TBDK] OSC1 CLKIN D1 4 MCLR/Vtm Ri GND 1 N4] 48 5 Vss DTR OSC2 CLKOUT 15 Vdd 14 RBZ DATA 13 RB6 CLOCK 12 47R 6 RBO ]nt DATA DE-9 Female 7 RBI "RTS RB2 RB5 11 WBC547 RB3 RB4 10 021 R4 16F84 an 467 JR6 OK GND J2 1N4148 8v2 R3 3470R R2 547R GND OL5v 02 Ov ci Vpp 03 Vpp D8 .C2 D5 D3 Det DATA -04 Data 1 Ou 22u 56] 1 N4148 RIS 05 Clock D2 K ] SP LED 5V LED Pgm LED CIK I N4148