Question
Write the truth table for a NAND gate connected as given in Fig. 14.45.
Hence identify the exact logic operation carried out by this circuit.
Hence identify the exact logic operation carried out by this circuit.
✓
Answer
A acts as the two inputs of the NANO gate and Y is the output, as shown in the following figure.
Hence, the output can be written as:
$\text{Y}=\overline{\text{A}\cdot{\text{A}}}=\overline{\text{A}}+\overline{\text{A}}=\overline{\text{A}}\ \ \ ...\text{(i)}$
The truth table for equation (i) can be drawn as:
This circuit functions as a NOT gate. The symbol for this logic circuit is shown as:
Hence, the output can be written as:
$\text{Y}=\overline{\text{A}\cdot{\text{A}}}=\overline{\text{A}}+\overline{\text{A}}=\overline{\text{A}}\ \ \ ...\text{(i)}$
The truth table for equation (i) can be drawn as:
| A | $_{\text{Y}}\Big(=\overline{\text{A}}\Big)$ |
| 0 | 1 |
| 1 | 0 |
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In an experiment on photoelectric effect, the slope of the cut-off voltage versus frequency of incident light is found to be 4.12 × 10–15 Vs. Calculate the value of Planck’s constant.
A rectangular wire loop of width a is suspended from the insulated pan of a spring balance, as shown in A current i exists in the anti-clockwise direction in the loop. A magnetic field Bexists in the lower region. Find the change in the tension of the spring if the current in the loop is reversed.
Write the product of equivalent capacitances when 10 capacitors, each having a capacitance of $10 \mu F$, are connected in series and then parallel connection.
→Write Einstein's Photoelectric equation and mention which important features in photoelectric effect can be explained with the help of this equation.
The maximum kinetic energy of the photoelectrons gets doubled when the wavelength of light incident on the surface changes from $\lambda_{1}$to $\lambda_{2}$. Derive the expressions for the threshold wavelength $\lambda_{\circ}$ and work function for the metal surface.
→The maximum kinetic energy of the photoelectrons gets doubled when the wavelength of light incident on the surface changes from $\lambda_{1}$to $\lambda_{2}$. Derive the expressions for the threshold wavelength $\lambda_{\circ}$ and work function for the metal surface.
Draw a graph showing change of alternating current with frequency in LCR series resonant circuit and obtain expression for bandwidth.
When you hold a pen and write on your notebook, what kind of force is exerted by you on the pen? By the pen on the notebook? By you on the notebook?
What are isotopes? Explain with an example how the average mass can be obtained from the relative proportions of different isotopes of the same element.
Give brief explanation of a semi-conductor diode.
We have valence electrons and conduction electrons in a semiconductor. Do we also have 'valence holes' and 'conduction holes'?
A long, straight wire of radius r carries a current i and is placed horizontally in a uniform magnetic field B pointing vertically upward. The current is uniformly distributed over its cross-section.
- At what points will the resultant magnetic field have maximum magnitude? What will be the maximum magnitude?
- What will be the minimum magnitude of the resultant magnetic field?