first part
1, multiple choice:
Logisim red cables represent what value?
Options:
A: 0
B: 1
C: the X-
D: Error
E: Other
answers: [error]
2, multiple choice:
Logisim Orange cable represents what value?
Options:
A: 0
B: 1
C: the X-(uncertain)
D: Other,
answer: [Other]
3, multiple choice:
Logisim blue cable represents what the value of
the options:
A: 0
B: 1
C: x (undefined)
D: Other
answers: [x (undefined)]
4, multiple choice:
Logisim circuit appears how shock treatment?
Options:
A: Circuit infinite loop shock because of improper circuit caused, should try to find a feedback loop circuit
B: Logisim restart Dafa
C: close-signal analog simulation menu, using the signaling step Ctrl + I function to view the signal circuit establishment procedure
D: Ctrl + R reset simulator
E: resetting the shock threshold
answer: [shock is not appropriate because the circuit loop caused by an infinite loop, should try to find the feedback loop circuit; off signal of the analog simulation menu, step by the signal transmission function to view process Ctrl + I signal circuit established; Ctrl + R simulator reset; reset shock threshold]
5, True or False:
Logisim as the main circuit may be called by other sub-circuit circuit.
Options:
A: to
B: wrong
answer: [for]
6, True or False:
Logisim combined logic output of truth table analysis tab may be independent of the input key signal.
Options:
A: to
B: wrong
answer: [for]
7, multiple choice:
Logisim combination of automatic circuit generation up to support a number of input?
Options:
A:. 4
B:. 6
C:. 8
D: 12
A: [12]
8. True or False:
Logisim in-hand stamp tool click on the line can see the value of the line
options:
A: to
B: wrong
answer: [for]
9, multiple choice:
Logisim circuit appears how the blue line treatment?
Options:
A: Check if there are unconnected inputs
B: using the reset function of the reset circuit
C: Logisim exist bug, using restart Gong solution
D: try resetting enable signal of the analog simulation menu, is enabled by default
answer: [check if there is not an input connection; using the reset function of the reset circuit; Logisim exist bug, using restart Gong solution; try analog signal is provided to enable simulation menu, is enabled by default]
10, multiple choice:
Logisim the XOR gate default behavior of multiple input?
Options:
A: an input to an output when 1
B: when an odd number of input 1 is output as a
C: When an even number of input 1 is output to a
D: When an input to 1 output 0
Answer: output when an input [1] 1
11. True or False:
Hand Logisim toolbar icon shaped stamp tool can dynamically modify the value of the pin?
Options:
A: to
B: wrong
answer: [for]
12, multiple choice:
Logisim logic AND gate component supports shortcuts What?
Options:
A: direction key
B: number keys
C: ctrl + number keys
D: alt + numeric keys
Answer: [direction key; numeric keys; alt + numeric keys
the second part
1, multiple choice:
two 8-bit binary numbers are compared, without considering the hardware cost, the shortest delay output signal which
options:
A: greater than
B: equal to
C: less than
D: same
answer: [equal]
2, multiple choice:
About a combinational logic circuit, the following statement is correct
options:
A: a combinational logic circuit is a basic logic gate circuit
B: combinational logic circuit output is input logic function
C: a combination circuit feedback loop may exist
D: when the input signal changes, the output signals of all combinations of logic are simultaneously updated with the new value of
E: there may be a combinational logic circuit outputs an input signal often neglected problem caused by competition
answer: [a combinational logic circuit are consists of basic logic gate circuit; logic function output is the input of the combinational logic circuit; there may be a combinational logic circuit outputs an input signal often neglected problem caused by competition]
3, multiple choice:
choose a 4 bit wide control terminal of MUX several
options:
A:. 1
B: 2
C: 4
D:. 8
E: 16
A: [2]
4, multiple choice:
implemented with a decoder input and output interface computer address decoding circuitry, if used in the decoder has three address entered, then up to control input and output devices several
options:
A:. 3
B: 6
C: 8
D: 16
The answer: [8]
5. True or False:
data distributor (demultiplexer) multiple inputs, one output
options:
A: to
B: wrong
answer: [wrong]
6, multiple choice:
how to combine circuit for processing glitch?
Options:
A: increasing the redundancy
B: increasing the inertia delay, the RC filter circuit filters
C: gating method, such as by using synchronous sampling clock signal
D: not
answer: [redundancy increases; increasing the inertia delay, the RC filter circuit filters ; gating method, such as using a sampling clock signal synchronized]
7, multiple choice:
on synchronous sequential logic circuit, are the correct
options:
A: All the circuit components are synchronized using a common clock
B: there must be a feedback circuit loop
C: synchronous sequential circuit is constituted by a combination of logic and storage unit
D: there is a synchronization timing circuit steady alkylene question
answer: [All circuit components are synchronized using a common clock; circuit there must be a feedback loop; timing synchronization circuit is constituted by a combination of logic and storage unit; synchronous sequential circuits exist metastable problem state]
8, multiple choice:
The following devices can be used to build counters are
options:
A: Encoder
B: decoder
C: JK flip-flop
D: D flip-flop
E: a data distributor
Answer: [JK flip-flop; D trigger]
