in positive logic, a low level represents a binary 1.
if the period of a pulse waveform increases, the frequency also increases.
a timing diagram shows the timing relationship of two or more digital waveforms.
a pulse in a certain waveform occurs every 10ms. the frequency is
the binary number 1101 is equal to the decimal number
the decimal number 17 is equal to the binary number
the decimal number system is a weighted system with ten digits.
the binary number system is a weighted system with two digits.
in binary, 1 1=2
binary number 110011.11 is equal to decimal number
decimal number 45.5 equals binary number
what does bit mean?
explain the difference between a digital quantity and an og quantity.
give an example of a system that is og and one that is combination of both digital and og.
determine the weight of the 1 in the binary number 10000.
convert the binary number 10111101.011 to decimal.
in binary, 1 1=2, true or false?
convert the decimal number 21.32 to binary. (keep 4 digits)
the decimal number 17 is equal to the binary number
the binary number 1110 is equal to the decimal number
the decimal number system is a weighted system with ten digits. true or false?
the binary number system is a weighted system with two digits. true or false?
lsb stands for lowest single bit. true or false?
the bcd number for decimal 473 is
convert the bcd number 00011001 to decimal
gray code is one kind of reliability code. true or false?
what is the ascii representation for the character $?
the bcd number for decimal 473 is
convert the bcd number 00011001 to decimal
gray code is one kind of reliability code. true or false?
what is the ascii representation for the character $?
what does bit mean?
explain the difference between a digital quantity and an og quantity.
give an example of a system that is og and one that is combination of both digital and og
determine the weight of the 1 in the binary number 10000.
convert the binary number 10111101.011 to decimal.
in binary, 1 1=2, true or false?
convert the decimal number 21.32 to binary. (keep 4 digits)
the decimal number 17 is equal to the binary number
the binary number 1110 is equal to the decimal number
the decimal number system is a weighted system with ten digits. true or false?
the binary number system is a weighted system with two digits. true or false?
lsb stands for lowest single bit. true or false?
the bcd number for decimal 473 is
convert the bcd number 00011001 to decimal
gray code is one kind of reliability code. true or false?
what is the ascii representation for the character $?
when the input to an inverter is high, the output is (a) high or 1 (b) low or 1 (c) high or 0 (d) low or 0
the output an and gate with inputs a,b, and c is a 1(high) when (a) a=1,b=1,c=1 (b) a=0,b=0,c=1 (c) a=0,b=0,c=0
the output of an or gate with inputs a,b, and c is a 1 (high) when (a)a=1,b=1,c=1 (b)a=0,b=0,c=1 (c) a=0,b=0,c=0. (d) answers (a), (b), and (c) (e) only answers (a) and (b)
write the output expression for a 3-input nor with input variables a, b, and c.
describe the truth table for a 4-input and gate.
the complement of a variable is always a. 0 b. 1 c. equal to the variable d. the inverse of the variable
the boolean expression is a. a sum term b. a literal term c. a product term d. a complemented term
the boolean expression is a. a sum term b. a product term c. a literal term d. always 1
according to the commutative law of addition. a. ab=ba b. a=a a c. a (b c)=(a b) c d. a b=b a
according to the associative law of multiplication. a. b=bb b. a(bc)=(ab)c c. a b=b a d. a ab=a
according to the distributive law . a. a(a 1)=a b. a(bc)=abc c. a(b c)=ab ac d. a ab=a
which one of the following is not a valid rule of boolean algebra? a. a 1 = 1 b. c. aa = a d. a 0 = a
which of the following rules states that if one input of an and gate is always 1, the output is equal to the other input? a. a 1 = 1 b. a a = a c. a a = a d. a 1 = a
according to demorgan’s theorems, the complement of a product of variables is equal to a. the complement of the sum b. the sum of the complements c. the product of the complements d. answers (a), (b), and (c)
the domain of the expression is a. a and d b. b only c. a, b, c, and d d. none of these
an example of a sum-of-products(sop) expression is a. a b(c d) b. c. d. both answers (a) and (b)
an example of a standard sop expression is a. b. c. d.
the boolean expression x = (a b)(c d) represents (a) two ors anded together (b) two ands ored together (c) a 4-input and gate (d) a 4-input or gate
an example of a standard sop expression is (a) ab bc abd (b) ac acd (c) a b ab (d) abd ab
a 4-variable karnaugh map has (a) four cells (b) eight cells (c) sixteen cells (d) thirty-two cells
find the values of the variables that make each product term 1 and each sum term 0. (a) abc (b) ac (c) b
convert the following expressions to sum-of-product (sop) forms: (a) a (d c ) (b) (a b)c
using boolean algebra techniques, simplify this expression: a a() b().
using boolean algebra techniques, simplify this expression: bc a ac abc
single choice: 1. a half-adder is characterized by (a) two inputs and two outputs (b) three inputs and two outputs (c) two inputs and three outputs (d) two inputs and one output 2. a full-adder is characterized by (a) two inputs and two outputs (b) three inputs and two outputs (c) two inputs and three outputs (d) two inputs and one output 3. the inputs to a full adder are a = 1, b = 0, cin = 1. the outputs are (a) sum= 0, cout = 1 (b) sum = 1, cout = 0 (c) sum = 0, cout = 0 (d) sum = 1, cout = 1 4. a 3-bit parallel adder can add (a) three 2-bit binary numbers (b) two 3-bit binary numbers (c) three bits at a time (d) three bits in sequence 5. to expand a 2-bit parallel adder to a 4-bit parallel adder, you must (a) use two 2-bit adders with no interconnections (b) use two 2-bit adders and connect the sum outputs of one to the bit inputs of the other (c) use four 2-bit adders with no interconnections (d) use two 2-bit adders with the carry output of one connected to the carry input of the other 6.if an octal-to-binary priority encoder(7 is the highest, 0 is lowest) has its 0, 2, 5, and 6 inputs at the active level, the active-high binary output is (a) 110 (b) 010 (c) 101 (d) 000
what is a register?
what is the storage capacity of a register?
1. what does the term asynchronous mean in relation to counters?