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D17133CS Datasheet(PDF) 107 Page - NEC |
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D17133CS Datasheet(HTML) 107 Page - NEC |
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107 / 289 page ![]() CHAPTER 11 ARITHMETIC AND LOGIC UNIT 92 Operation Result Addition in 4-bit Binary Addition in BCD Operation Result CY Operation Result CY 0 0 0000 0 0000 1 0 0001 0 0001 2 0 0010 0 0010 3 0 0011 0 0011 4 0 0100 0 0100 5 0 0101 0 0101 6 0 0110 0 0110 7 0 0111 0 0111 8 0 1000 0 1000 9 0 1001 0 1001 10 0 1010 1 0000 11 0 1011 1 0001 12 0 1100 1 0010 13 0 1101 1 0011 14 0 1110 1 0100 15 0 1111 1 0101 16 1 0000 1 0110 17 1 0001 1 0111 18 1 0010 1 1000 19 1 0011 1 1001 20 1 0100 1 1110 21 1 0101 1 1111 22 1 0110 1 1100 23 1 0111 1 1101 24 1 1000 1 1110 25 1 1001 1 1111 26 1 1010 1 1100 27 1 1011 1 1101 28 1 1100 1 1010 29 1 1101 1 1011 30 1 1110 1 1100 31 1 1111 1 1101 Table 11-2. Results of Arithmetic Operations Performed in 4-Bit Binary and BCD Operation Result Subtraction in 4-bit Binary Subtraction in BCD Operation Result CY Operation Result CY 0 0 0000 0 0000 1 0 0001 0 0001 2 0 0010 0 0010 3 0 0011 0 0011 4 0 0100 0 0100 5 0 0101 0 0101 6 0 0110 0 0110 7 0 0111 0 0111 8 0 1000 0 1000 9 0 1001 0 1001 10 0 1010 1 1100 11 0 1011 1 1101 12 0 1100 1 1110 13 0 1101 1 1111 14 0 1110 1 1100 15 0 1111 1 1101 –16 1 0000 1 1110 –15 1 0001 1 1111 –14 1 0010 1 1100 –13 1 0011 1 1101 –12 1 0100 1 1110 –11 1 0101 1 1111 –10 1 0110 1 0000 –9 1 0111 1 0001 –8 1 1000 1 0010 –7 1 1001 1 0011 –6 1 1010 1 0100 –5 1 1011 1 0101 –4 1 1100 1 0110 –3 1 1101 1 0111 –2 1 1110 1 1000 –1 1 1111 1 1001 |
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