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admin

???????????????(??)

??? ??????

1?1?????????

1.1.2?????????

010110100

1?1?4???????????????????1?????2?????3?????

LSB

0 1 2 11 12 ?ms? ?????????????????????????????????????T=10ms ?????????f=1/T=1/0.01s=100HZ

???????????????????q=1ms/10ms*100%=10% 1.2??

1.2.2???????????????????????????????????2?2?127 ?4?2.718

???2??127?D=27-1=?10000000?B-1=?1111111?B=?177?O=?7F?H ?4??2.718?D=(10.1011)B=(2.54)O=(2.B)H 1.4?????

1.4.1??????????8421BCD?? ?1?43 ?3?254.25 ???43?D=?01000011?BCD

1.4.3??????????????ASC??????P28 ?1?+ ?2?@ ?3?you (4)43

????????????????????ASC????????????????????? ?1?�+�?ASC???0101011???00101011?B=?2B?H ?2?@?ASC???1000000,(01000000)B=(40)H

(3)you?ASC????1111001,1101111,1110101,???????????79,6F,75 (4)43?ASC???0110100,0110011,???????????34,33 1.6??????????

1.6.1???1. 6.1????????A?B`????????????L????

?4

?: (a)???? (b)????????

??? ???? ????

2.1.1 ??????????? (3)A?B?AB?AB?A?B?=AB+AB ???????

????2????A?B?AB+AB????????? 2.1.3 ?????????????

(3)A?ABC?ACD?(C?D)E?A?CD?E ??A?ABC?ACD?(C?D)E?A(1?BC)?ACD?CDE?A?ACD?CDE?A?CD?CDE

?A?CD?E

2.1.4 ?????????? (3)ABC(B?C) ??ABC(B?C)

?(A?B?C)(B?C)

?AB?AC?BB?BC?CB?C

?AB?C(A?B?B?1)

?AB?C

(6)(A?B)?(A?B)?(AB)(AB) ??(A?B)?(A?B)?(AB)(AB) ?A?B?A?B?(A?B)(A?B)

?B?AB?AB ?AB?B ?A?B

?AB

(9)ABCD?ABD?BCD?ABCBD?BC ??ABCD?ABD?BCD?ABCBD?BC

?ABC(D?D)?ABD?BC(D?C)?B(AC?AD?C?D)?B(A?C?A?D)?B(A?C?D)?AB?BC?BD

2.1.7 ?????????????????????????????? (1)L?AB?AC

(2)L?D(A?

C)

(3)L?(A?B)(C?

D)

2.2.2 ????L?A?B?C?D???????????????L????????

??L(A,B,C,D)?BCD?BCD?BCD?ABD 2.2.3 ??????????

?1?ABCD?ABCD?AB?AD?ABC ??ABCD?ABCD?AB?AD?ABC

?ABCD?ABCD?AB(C?C)(D?D)?AD(B?B)(C?C)?ABC(D?D)

?ABCD?ABCD?ABCD?ABCD?ABCD?ABCD?ABCD

?6?L(A,B,C,D)???

?m(0,2,4,6,9,13)??d(1,3,5,7,11,15)

????????????????? ???

??????????(???)????

??? ?????? 1?1 ????????? 1.1.2?????????

010110100

1?1?4 ???????????????????1?????2?????3?????

MSB

0 1 2 11 12 ?ms?

LSB

?????????????????????????????????????T=10ms ?????????f=1/T=1/0.01s=100HZ

???????????????????q=1ms/10ms*100%=10%1.2 ??

1.2.2 ???????????????????????????????????2?4 ?2?127 ?4?2.718 ???2??127?D= 27 -1=?10000000?B-1=?1111111?B=?177?O=?7F?H

?4??2.718?D=(10.1011)B=(2.54)O=(2.B)H 1.4 ?????

1.4.1 ?????????? 8421BCD ??

?1?43 ?3?254.25 ???43?D=?01000011?BCD 1.4.3 ?????????????? ASC??????P28 ?1?+ ?2?@ ?3?you (4)43

???????????????????? ASC?????????????????????

?1?�+�? ASC??? 0101011???00101011?B=?2B?H ?2?@? ASC??? 1000000,(01000000)B=(40)H

(3)you ? ASC???? 1111001,1101111,1110101,??????????? 79,6F,75 (4)43 ? ASC??? 0110100,0110011,??????????? 34,33 1.6 ??????????

1.6.1 ??? 1. 6.1 ???????? A?B`???????????? L ????

?: (a)???? (b)????????

??? ???? ????

2.1.1 ???????????

(3)A? =B AB AB+ ?A?B?=AB+AB ???????

????2????A?B?AB+AB????????? 2.1.3 ?????????????

(3)A+ABC ACD C D E A CD E+

+ +( ) = + +

??A+ABC ACD C D E+ + +( )

=A(1+BC ACD CDE)+ +

= +A ACD CDE+

= +A CD CDE+ = +A CD+ E 2.1.4 ?????????? (3) ABC B( +C) ?? ABC

B( +C)

= + +(A B C B C)( + )

=AB AC BB BC CB C++ + + +

=AB C A B B+ ( + + +1)

1

=AB C

(6)(A+ + + +B A B AB AB) (

) ( )(

) ( ) ()( )

= A B?+ A B?+(A+ B A)(+ B) B AB AB = + +AB B = +A B = +

=AB

(9)ABCD ABD BCD ABCBD BC+ + ??ABCD ABD BCD ABCBD BC+ +

+ +

+ +

+ + ) =B A C A

=ABC D D ABD BC D C( + +) + ( + ) =B AC AD C D( + D( + + + ) =B A C D( + + ) =AB BC BD+ +

2.1.7 ?????????????????????????????? (1) L AB AC

= +

( )(2) L DAC= +

2

(3) L ( ABCD)( )

=+ +

2.2.2 ????L?A?B?C?D???????????????L????????

( ABCDBCDBCDBCDABD, , , ) ?? L = + +

2.2.3 ??????????

+

3


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