MCQ
How many $NAND $ gates are used to form an $AND$  gate
  • A
    $1$
  • $2$
  • C
    $3$
  • D
    $4$

Answer

Correct option: B.
$2$
b
(b)Two $ ‘NAND’$  gates are required as follows
$Y = \overline {\overline {AB} .\overline {AB} } = AB$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Half life of a radio-active substance is $20\, minutes$. The time between $20\%$ and $80\%$ decay will be ........... $minutes$
A magnetic needle suspended parallel to a magnetic field requires $\sqrt 3\,J $ of work to turn it through $60^o$. The torque needed to maintain the needle in this position will be
Bulk modulus was first defined by
Two sound sources when sounded simultaneously produce four beats in $0.25$ second. the difference in their frequencies must be
Three point masses $m_1, m_2$ and $m_3$ are placed at the corners of a thin massless rectangular sheet ($1.2 \,m \times$ $1.0 \,m$ ) as shown. Centre of mass will be located at the point ........... $m$
A $U-$ tube in which the cross-sectional area of the limb on the left is one quarter, the limb on the right contains mercury (density $13.6 g/cm^3$). The level of mercury in the narrow limb is at a distance of $36 cm$  from the upper end of the tube. What will be the rise in the level of mercury in the right limb if the left limb is filled to the top with water ........ $cm$
What is the energy of $He^+$ electron in first orbit?......$eV$
The thermionic emission of electron is due to
Compare the dispersive powers of two prisms if one of them deviates the blue and red rays through $10^{\circ}$ and $6^{\circ}$ respectively and the second prism through $8^{\circ}$ and $4.5^{\circ}$
A wheel of radius $R$ and mass $M$ is placed at the bottom of a fixed step of height $R$ as shown in the figure. A constant force is continuously applied on the surface of the wheel so that it just climbs the step without slipping. Consider the torque $\tau$ about an axis normal to the plane of the paper passing through the point $Q$. Which of the following options is/are correct?

(image)