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ENCODER, DECODER dan SEVEN SEGMEN. YUSRON SUGIARTO. Dekoder. Dekoder adalah suatu rangkaian logika yang memiliki sedikit masukan dan banyak keluaran. Dekoder. Dekoder. Dekoder. ENCODERS AND DECODERS. ONLY ONE INPUT ACTIVATED AT A TIME. BINARY CODE INPUT. - PowerPoint PPT Presentation
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ENCODER, DECODER dan SEVEN SEGMEN
YUSRON SUGIARTO
Dekoder
Dekoder adalah suatu rangkaian logika yang memiliki sedikit masukan dan banyak keluaran.
Dekoder
Dekoder
Dekoder
ENCODERS AND DECODERS
A 0
A 1
A 2
A 3
A 4
A 5
A 6
A 7
ENCODER
O 0
O 1
O 2
A 0
A 1
A 2
O 0
O 1
O 2
O 3
O 4
O 5
O 6
O 7
DECODER
ONLY ONE INPUT ACTIVATED AT A TIME
BINARY CODE OUTPUT
BINARY CODE INPUT
ONLY ONE OUTPUT ACTIVATED AT A TIME
THE 8421 BCD CODE• BCD stands for Binary-Coded Decimal.
• A BCD number is a four-bit binary group that represents one of the ten decimal digits 0 through 9.
Example:
Decimal number 4926 4 9 2 6
8421 BCD coded number 0100 1001 0010 0110
ELECTRONIC ENCODER - DECIMAL TO BCD
0
Decimalto
BCDEncoder
BCD output
Decimal input0 0 0 0
5
0 1 0 1
7
0 1 1 1
3
0 0 1 1
• Encoders are available in IC form.• This encoder translates from decimal
input to BCD output.
10 line to 4 line Encoder
ENCODER1248
DECIMAL BINARY (BCD)
9 5V
8 5V
7 5V
6 5V5 5V
4 5V3 5V
2 5V1 5V
74147I9I8I7I6I5I4I3I2I1
A0A1A2A3
10 line to 4 line Encoder
0
1
2
3
4
5
6
7
8
9
DECODER
BINARY (BCD)
DECIMAL
1 0V
2 0V
4 0V
8 0V
74LS42
A3A2A1A0
9876543210
4 line to 10 line Decoder
BCD-to-7-SegmentDecoder/
Driver
DECODERS: BCD TO 7-SEGMENT DECODER/DRIVERBCD input
0 0 0 00 0 0 0
Decimal outputLED
0 0 0 10 0 0 10 0 1 00 0 1 00 0 1 10 0 1 10 1 0 00 1 0 0
• Electronic decoders are available in IC form.• This decoder translates from BCD to decimal.• Decimals are shown on an 7-segment LED display.• This IC also drives the 7-segment LED display.
BCD-to-7-SegmentDecoder/
Driver
BCD inputDecimal output
0 0 1 1
?
Q #1- What is the decimal output from the decoder that appears on the 7-segment display?
Answer: 3
Q #2- What is the decimal output from the decoder that appears on the 7-segment display?
0 0 0 0
Answer: 0
Q #3- What is the decimal output from the decoder that appears on the 7-segment display?
1 0 0 1
Answer: 9
Q #4- What is the decimal output from the decoder that appears on the 7-segment display?
Answer: 7
0 1 1 1
Q #5- What is the decimal output from the decoder that appears on the 7-segment display?
Answer: 6
0 1 1 0
TEST
BCD-TO-SEVEN SEGMENT DECODER DRIVER
5V
abcdef g .
V+
74LS47A3A2A1A0
testRBI
gfedcba
RBO
7-segmen display
Rangkaian Pengubah kode BCD ke LED 7-segmen
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