Digital circuit and logic design The binary 110. L10 is equivalent to the decimal (): A．6．5 B．6．65 C．6．6 D．3．3 The remainder of the decimal number 555 is () A．101101101 B．0101010l0101 C．100010001000 D．010101011000 Which is the ASCII code of the lowercase letter "d" in decimal system? A．65 B．68 C．97 D．100 \x05 The result is: () A．161．25 B．161．5 C．171．25 D．171．5 \x05 Prove the equality AB + BC + AC = (a + b) (B + C) (c + a) by algebraic method

Digital circuit and logic design The binary 110. L10 is equivalent to the decimal (): A．6．5 B．6．65 C．6．6 D．3．3 The remainder of the decimal number 555 is () A．101101101 B．0101010l0101 C．100010001000 D．010101011000 Which is the ASCII code of the lowercase letter "d" in decimal system? A．65 B．68 C．97 D．100 \x05 The result is: () A．161．25 B．161．5 C．171．25 D．171．5 \x05 Prove the equality AB + BC + AC = (a + b) (B + C) (c + a) by algebraic method

A
C
D
D
AB+BC+AC=B(A+C)+ACC+AAC=B(A+C)+AC(A+C)=(B+AC)(A+C)=(B+A)(B+C)(A+C)

Digital circuit and logic design 2
The difference between digital signal and analog signal is that digital signal is discontinuous in size and continuous in time, while analog signal is opposite
correct
error
(6B. 2) the binary equivalent of 16 is 1101011.1
correct
error
The coding mode of 8421BCD code is unique
correct
error
The sum of all minimum terms of a logic function is equal to 0
correct
error
The input of TTL NAND gate can be suspended, which is equivalent to logic "1" level
correct
error
2、 Choose the only correct answer to the single choice question (5 questions in total, 50.0 points in total)
The 8421BCD code equal to (36.7) 10 is ()
one hundred and ten thousand one hundred and ten point one zero one
eleven thousand one hundred and ten point one one one zero
one hundred and ten thousand one hundred and ten point zero one one one
one hundred and ten thousand one hundred and ten point one one one
The minimum term expression, whose logical relationship is ()
And are dual to each other
In the following logic circuits, those that are not combinational logic circuits are ()
decoder
encoder
Full adder
register
The difference between digital signal and analog signal is ()
Digital signal is discontinuous in size and continuous in time, while analog signal is opposite
Digital signal is continuous in size and discontinuous in time, while analog signal is opposite
Digital signal is discontinuous in size and time, but analog signal is opposite
The remainder 3bcd code equivalent to decimal number (19) 10 is ()
00101100
01001100
00110101
01011010

The first error. The digital signal is also discontinuous in time
The second one must be wrong. The binary number
The third is right
The fourth mistake
The fifth is right~
Choose the third for the first question
The second one can't be seen
The third register. Only it is a sequential circuit
The fourth is the second

According to its circuit characteristics, digital circuit can be divided into what logic circuit and what logic circuit

Combinational logic circuit and sequential logic circuit

A simple and convenient method of 11 3 / 4 × 12 1 / 4

11 and 3 / 4 × 12 and 1 / 4
＝（12-1/4）x（12+1/4）
=12^2-1/4^2
=144-1/16
=143 15 / 16

157×23156．

157 × 23156 = (156 + 1) × 23156 = 156 × 23156 + 23156 = 23 + 23156 = 2323156, so the answer is: 2323156

1. 2005 * 2003 / 2004 2. 2003 * 20042004-2004 * 20032003 calculation
1: 2005 * 2003 / 2004, 2:2003 * 2004 2004, 2004-2004 * 2003, 2003, calculation formulas and answers

1.2005*2003/2004 = (2004+1)(2004-1)/2004= (2004^2-1)/2004= 2004-1/20042.2003*20042004-2004*20032003 = (2004-1)(2004*10000+2004*1) - 2004*[(2004-1)*10000+(2004-1)*1)]= (2004-1)*2004*10001 - 2004*(2004-...

It is known that a = a + 2. B = a ^ 2-A + 5. C = a ^ 2 + 5a-19. Where a is greater than 2]
Verify that B-A is greater than 0 and point out the size relationship between a and B. 2 compare a and C which is larger, and explain the reason

Certification:
A=a+2
B=a²-a+5
B-A=a²-a+5-a-2
=a²-2a+3
=a²-2a+1+2
=(a-1)²+2
Because a > 2
So A-1 > 1
(a-1)²>1
Then (A-1) ² + 2 > 3
So B-A > 0
And B-A > 3
C=a²+5a-19
C-A=a²+5a-19-a-2
=a²+4a-21
=a²+4a+4-25
=(a+2)²-25
Because a > 2
a+2>4
(a+2)²>16
When (a + 2) ² - 25 = 0
That is (a + 2) ² = 25
A + 2 = 5 or a + 2 = - 5
That is, a = 3 or a = - 7 (rounding off)
When (a + 2) ² - 25 > 0
(a+2)²>25
A + 2 > 5 or a + 23 or a

1.12.23.28.45.37.63.5.11.2.90.17.13.8.7.14.29.27, which is prime

23,37,5,11,2,17,13,7,29

When m is a real number, the sum of squares of the two real roots of the equation x2-2mx + (M + 2) = 0 is greater than 2
Finally, we find how (x 1 + x 2) - 2 (M + 2) > 2 becomes

Let: the two equations given are X1 and X2 respectively. According to Weida's theorem, there are: X1 + x2 = 2m (1)(x1)(x2)=m+2……………………… (2) By substituting (1) with: (x1 + x2) &# 178; = (2m) &# 178; (x1) &# 178; + 2 (x1) (x2) + (x2) &# 178; = 4m & # 178; and (2) with: (x1

What does three quarters divided by one quarter mean?

How many quarters out of three quarters