Hardware

Which of the following is the appropriate circuit with two (2) inputs and one (1) output where the output X is 0 only when the two (2) inputs A and B are both 1?

Which of the following is equivalent to the logical circuit shown below?

A vehicle travels along a circular path as shown in the figure below. Two sensors, L and R, whose revolution speeds are independently controlled, are attached to the left and right rear wheels. Sensors L and R are photo-reflective sensors, and their values change according to the ratio of black and white regions they pass over. If the ratio increases, the sensor value decreases, and if the ratio decreases, the sensor value increases. Which of the following is an appropriate control to ensure that the vehicle travels along the black outline of the circle? Here, if the values of the two sensors are equal, the motor revolution speeds return to the initial values.

Which of the following is an appropriate explanation of an actuator?

A graphical symbol for the 2-to-1 MUX (multiplexer) and its truth table are shown in the figure below. The MUX has two data inputs (I₀, I₁), one select-line (S) and one output (Z). If the select line is S=0, then the output Z is switched to input I₀, whereas if a select line is S=1, then the output Z is switched to input I₁.

Which of the following is a logic gate that is equivalent to the circuit implemented with the 2-to-1 MUX below?

Which of the following is equivalent to the circuit below?

Which of the following is a sequential circuit that has two stable states?

Which of the following is equivalent to the logic circuit shown below?

A power supply unit has a rated output power of 500 watts and an efficiency of 80%. In order to obtain an output power of 500 watts from this power supply unit, how many watts is the minimum input power?

Which of the following is the logic circuit that is equivalent to the logical expression ABC + AC?

Which of the following is the logic gate that is equivalent to the logic circuit shown below?

At the rising edge of the clock signal, the content of an 8-bit serial-in parallel-out shift register is shifted upward, while positive logic data is simultaneously read into the least significant bit. The value is fixed at the rising edge of a strobe. When the results of an observation of each signal’s waveform are as shown in the diagram below, which of the following is the value of the shift register after it is fixed? Here, numeric values are represented in hexadecimal.

A half adder is a logic circuit that performs the addition of two single-bit binary numbers and outputs the sum and carry. The truth table of a half adder is shown in the table below. Which of the following is an appropriate logic diagram of the half adder?

By using a sensor that detects changes in shape, the condition of infrastructure such as elevated highways can be monitored and maintained. Which of the following is a sensor that is used for this purpose?

Which of the following is an appropriate explanation of the function of an actuator?

Which of the following is the Exclusive-NOR logic function that is implemented with two-input NOR gates?

The half adder in the diagram below adds two (2) single-digit binary numbers, x and y, and produces z (the first digit of the sum) and c (the carry bit) as outputs. Which of the following is the appropriate combination of gate devices A and B?

Which of the following is not an implementation of the function F = A•B + C•D? Here, “•” represents the logic AND operation, and “+” represents the logic OR operation in the expression.

Which of the following is a logical expression that is equivalent to the logic circuit shown below?

A device, which operates using a 100V household power supply and through which a current of 10 A flows during operation, is operated from 0 minutes to 120 minutes as shown in the figure below. How much electrical energy, in watt-hour, is consumed during this time? Here, the value of the voltage and current is the effective value, no current flows when the device stops, and the power factor is 1.

Which of the following is a control method for a status of “a somewhat large number” or “slightly” ?

Which of the following is a secondary (rechargeable) battery?

Which of the following is the correct gate that converts the 2-input OR gate shown below into a NAND gate if the output of the added gate is respectively connected to input X and input Y?

Which of the following is an equivalent representation of the circuit below where only NAND gates are used?

There is a logic circuit shown below. When the input values are A = 1, B = 0, and C = 1, which of the following is the combination of the values of E and Y?

In a lighting circuit for an anode-common type LED with seven (7) segments, when 92 in hexadecimal is written out to the output port, which of the following is displayed? Here, P7 is the most significant bit (MSB), P0 is the least significant bit (LSB), and the LED lights up when the port output is 0.

A D/A converter with a resolution of 8 bits generates an output voltage of 0 volts for a digital input value of 0, and an output voltage of 2.5 volts for a digital input value of 128. When the lowest 1 bit of the digital input value is changed, which of the following is the change (in volts) of the output voltage that is generated by the D/A converter?