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1Ìâ

(1)110=6EH=01101110B (2)1039=40FH =010000001111B (3)0.75D=0.11B=0.CH (4)0.15625D=0.00101000B=0.28H 2Ìâ

(1)129 (0001 0010 1001)BCD

×¢£º ÔÚ¼ÆËã»ú»ã±à³ÌÐòÖÐBCDÂëÖ»ÄÜÓÃ16½øÖÆÊý±íʾ£¬ÐÎʽΪ129H (2) 5678 (0101 0110 0111 1000) BCD (3) 0.984 (0.1001 1000 0100) BCD

(4) 93.745 (1001 0011.011101000101) BCD 3Ìâ

(1) 10101010B=0AAH=170D (2)10000000B=80H=128D (3) 11000011.01B=0C3.4H=195.25 (4) 01111110B=7EH=126D 4Ìâ

(1)8E6H=100011100110B=2278 (2)0A42H=101001000010B=2626 (3)7E.C5H=01111110.11000101B=126.769

(4)0F19.1DH=111100011001.00011101B=3865.11328 5Ìâ

(1)1011011.101B=91.625D BCDΪ (10010001.011000100101) BCD (2)1010110.001B=86.125D BCDΪ (10000110.000100100101) BCD 6Ìâ

(0010 0111 0011) BCD ±íʾµÄÊ®½øÖÆÊýΪ 273 ¶þ½øÖÆÊýΪ100010001B (1001 0111.0010 0101) BCD ±íʾµÄÊ®½øÖÆÊýΪ 97.25 ¶þ½øÖÆÊýΪ01100001.01B 7Ìâ

(1) (2) (3) (4)

1001.11B 1101.01B 1000.011B 1111B + 11.11B - 0110.11B - 1001.101B - 1101B 1101.10B 0110.10B 0110.110B 0010B 8Ìâ

6AH AB1 FH 12ADH 117H + A6H + 0 E FCH - 01DEH - 0ABH 110H B A 1B H 10C F H 06 CH 9Ìâ

(1)ÎÞ·ûºÅÊý X=01H =01D Y=0FFH=255 (2)·ûºÅÊý X=01H =01D Y=0FFH= -1 ×¢£º¶ÔÓÚͬһ¸öÊýµ½µ×ÊÇ·ûºÅÊý»¹ÊÇÎÞ·ûºÅÊýÊÇÓɳÌÐòÉè¼ÆÕ߸ù¾ÝÊý¾Ýʵ¼ÊµÄÒâÒå¾ö¶¨µÄ£¬Ò»µ©¶¨ÏÂÀ´£¬ÔÚ³ÌÐòÖвÉÓò»Í¬µÄÖ¸ÁîÀ´Çø·Ö·ûºÅÊýºÍÎÞ·ûºÅÊý£¬¼´ËãÊýÔËËãÖ¸Áî»áÓзûºÅÊýºÍÎÞ·ûºÅÁ½Ì×Ö¸Áî¡£ 10.Ìâ

(1)101+31H+69H+0D5H+(5*8+7)=531

(2)127.8125+189.625+253.9768+502.5390=1079.77344 11Ìâ

¡®A¡¯ ¨C¡®Z ¡® ASCIIÂë Ϊ 41H¡ª5AH 48454C4C4FH ¡®a¡¯---¡®z¡¯ ASCIIÂë Ϊ 61H---7AH (2) ¡®A8¡¯ 4138H 12Ìâ

(1) ¡®E¡¯ ASCIIÂë Ϊ45H 01001001B±¾ÉíÎªÆæÊý¸ö1 ËùÒÔżУÑéD7Ϊ1£¬Îª0C5H£» ÆæÐ£ÑéD7Ϊ0£¬Îª45H

(2) ¡®6¡¯ ASCIIÂë Ϊ36H 00110110B±¾ÉíΪżÊý¸ö1 ËùÒÔżУÑéD7Ϊ0£¬Îª36H£» ÆæÐ£ÑéD7Ϊ1£¬Îª0B6H 13Ìâ

-38=[10100110B]Ô­=[11011001B]·´ = [11011010B]²¹ 8λ

-38=[1000000000100110B]Ô­=[1111111111011001B]·´ = [1111111111011010B]²¹ 16λ

125=[01111101B]Ô­=[01111101B]·´ = [01111101B]²¹ 8λ

125=[0000000001111101B]Ô­=[0000000001111101B]·´ = [0000000001111101B]²¹ 16λ

-128= [10000000B]²¹ 8λ Ô­ÂëºÍ·´Âë²»ÄÜÓÃ8λ±íʾ

-128=[1000000010000000B]Ô­=[1111111101111111B]·´ = [1111111110000000B]²¹ 16λ

14Ìâ

+0=[00000000B]Ô­=[00000000B]·´ = [00000000B]²¹ 8λ ¸ß8λ²¹0 Ϊ16λ

-0=[10000000B]Ô­=[11111111B]·´ = [00000000B]²¹ 8λ

-0=[1000000000000000B]Ô­=[1111111111111111B]·´ = [0000000000000000B]²¹ 16λ

15Ìâ

(1)[X]²¹=81H =[111111111]Ô­=[10000000]·´ ÕæÖµÎª-127

(2)[X]²¹=800H=[1000100000000000B]Ô­=[1111011111111111B]·´ ÕæÖµÎª-211 (3)[X]²¹=79H=[01111001B] Ô­=[01111001B]·´ ÕæÖµÎª121 (4)[X]²¹=0FFFEH=[1000000000000010] Ô­=[1111111111111101]·´ 16Ìâ

(1) [X]²¹=1000 0000 0000 0000B ÕæÖµÎª -8000H=-32768 (2) [X]²¹=1111 1111 1111 1111B ÕæÖµÎª -8000H=32768 (3) [X]²¹=0111 1111 1111 1111B ÕæÖµÎª 7FFFH=32767 (4) [X]²¹=0101 0101 0101 0101B ÕæÖµÎª 5555H=21845 17Ìâ

Ô­Âë ·´Âë ²¹Âë

(-1) (-127) (-1) (-127) (-1) (-128) 8λ¸ºÊý10000001B-11111111B 11111110B-1000000B 11111111B-1000000B (+1) (+127) (+1) (+127) (+1) (+127) 8λÕýÊý 00000001B-01111111B 01111111B-00000000B 00000000B-01111111B [+0] Ô­=000000000B [+0] ·´=00000000B [+0] ²¹=00000000B [-0] Ô­=100000000B [-0] ·´=11111111B [-0] ²¹=00000000B

NλµÄͨʽ ¨C(2N-1-1)---+(2N-1-1) ¨C(2N-1-1)---+(2N-1-1) ¨C(2N-1)---+(2N-1-1) 18Ìâ

(1) ²»Òç³ö ½á¹ûΪ15䳬³ö8λ²¹ÂëµÄ·¶Î§ (2) ²»Òç³ö ½á¹ûΪ-55䳬³ö8λ²¹ÂëµÄ·¶Î§ (3) Òç³ö ½á¹ûΪ-132³¬³ö8λ²¹ÂëµÄ·¶Î§ (4) ²»Òç³ö ½á¹ûΪ-125䳬³ö8λ²¹ÂëµÄ·¶Î§ 19Ìâ

(1) 27+11 (2) 37+29 00100111B 00110111B +00010001B +00101001 B 00101000B 01100000B + 00000110B 01100110B 20Ìâ (1)

17.5=00010001.1B ¹æ·¶»¯±íʾ 0.100011¡Á 25 ¸¡µãÔ­Âë0 0101 0 100011B ·´ÂëºÍÔ­ÂëÏàͬ (2)

-75.5 =-01001011.1B ¹æ·¶»¯±íʾ -0.100101¡Á 27(Éáµô×îµÍÁ½Î») Ô­Âë0 0111 1 100101 B ²¹Âë0 011 1 1 011011 B

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