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DESCRIPTION
materi ini mempunyai prinsip kerja bilangan desimal ke bilangan biner
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DECODER
OUTPUTInput N-Bit
Y1
Y0
Y2
Y3
Y5
Y4
Y6
Y7
C
B
A
TUJUAN
Dengan melaksanakan praktikum ini diharapkan mahasiswa dapat :•Memahami prinsip kerja dari rangkaian Decoder.•Membuat rangkaian Decoder dari gerbang logika.•Menjalankan fungsi IC Decoder 7442
DECODER• Rangkaian Decoder adalah rangkaian logika
yang menerima input-input biner dan mengaktifkan salah satu output-nya sesuai dengan urutan biner input-nya.
• Beberapa rangkaian decoder yang sering dijumpai adalah : Decoder 3 to 8 (3 bit input dan 8 output line) Decoder 4 to 16 (4 bit input dan 16 output line) Decoder BCD to decimal (4 bit input dan 10
output line) Decoder BCD to 7 segment (kombinasi input
dapat mengaktifkan beberapa output line)
DECODERTabel : Decoder 3 to 8
C
0
GND
LED
220
B A
1
GND
LED
220
2
GND
LED
220
3
GND
LED
220
4
GND
LED
220
5
GND
LED
220
6
GND
LED
220
7
GND
LED
220
INPUT OUTPUT
C B A Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
0 0 0 1 0 0 0 0 0 0 00 0 1 0 1 0 0 0 0 0 00 1 0 0 0 1 0 0 0 0 00 1 1 0 0 0 1 0 0 0 01 0 0 0 0 0 0 1 0 0 01 0 1 0 0 0 0 0 1 0 01 1 0 0 0 0 0 0 0 1 01 1 1 0 0 0 0 0 0 0 1
DECODER
OUTPUTInput N-Bit
Y1Y0
Y2Y3
Y5Y4
Y6Y7
C
B
A
Rangkaian Decoder BCD
to Decimal
C
0
GND
LED
220
B A
1
GND
LED
220
2
GND
LED
220
D
3
GND
LED
220
4
GND
LED
220
5
GND
LED
220
6
GND
LED
220
7
GND
LED
220
8
GND
LED
220
9
GND
LED
220
DATA HASIL PERCOBAAN
Tabel 6.1. Decoder 4 to 10
INPUT OUTPUTD C B A 0 1 2 3 4 5 6 7 8 90 0 0 00 0 0 10 0 1 00 0 1 10 1 0 00 1 0 10 1 1 00 1 1 11 0 0 01 0 0 1
SN54/74LS42 ONE-OF-TEN DECODER
INPUT
7442
A3
12
A2
13
A1
14
A0
15
10
32
21
43
54
76
65
97
10
811
9
GNDGNDGND GND
220
LED
-------------------
DATA HASIL PERCOBAAN
Tabel 6.2. IC 7442 (Decoder 4 to 10)
INPUT OUTPUTD C B A 0 1 2 3 4 5 6 7 8 90 0 0 00 0 0 10 0 1 00 0 1 10 1 0 00 1 0 10 1 1 00 1 1 11 0 0 01 0 0 1
Finish
Rangkaian Decoder BCD
to Decimal
C
0
GND
LED
220
B A
1
GND
LED
220
2
GND
LED
220
D
3
GND
LED
220
4
GND
LED
220
5
GND
LED
220
6
GND
LED
220
7
GND
LED
220
8
GND
LED
220
9
GND
LED
220
