GATE EC Digital Circuits questions

A memory system of size $26 \mathrm{~K}$ bytes is required to be designed using memory chips which have $12$ address lines and $4$ data lines each. The number of such chips required to design the memory system is

A $10$ - bit $\text{ADC}$ with a full scale output voltage of $10.24 \mathrm{~V}$ is designed to have $\mathrm{a} \pm \mathrm{LSB} / 2$ accuracy. If the $\mathrm{ADC}$ is calibrated at $25^{\circ} \mathrm{C}$ and the operating temperature ranges from $0^{\circ} \mathrm{C}$ to $50^{\circ} \mathrm{C}$, then the maximum net temperature …

A dynamic $\text{RAM}$ cell which hold $5 \mathrm{~V}$ has to be refreshed every $20 \mathrm{~m}$ secs, so that the stored voltage does not fall by more than $0.5 \mathrm{~V}$. If the cell has a constant discharge current of $0.1 \; \mathrm{pA}$, the storage capacitance of the cell is

The signal to quantisation noise ratio in an $n$-bit $\text{PCM}$ system

If the number of bits per sample in a $\text{PCM}$ system is increased from improvement in signal-to quantisation noise ratio will be

An 'Assembler' for a microprocessor is used for

A $\text{‘DMA'}$ transfer implies

An $\text{R-S}$ latch is a

The minimum number of $\text{MOS}$ transistors required to make a dynamic $\text{RAM}$ cell is

When a $\text{CPU}$ is interrupted, it

A switch-tail ring counter is made by using a single $\text{D}$ flip-flop. The resulting circuit is a

The minimum number of $\text{NAND}$ gates required to implement the Boolean function $\mathrm{A}+\mathrm{A} \overline{\mathrm{B}}+\mathrm{A} \overline{\mathrm{B}} \mathrm{C}$, is equal to

The output of the circuit in the figure is equal to

A dynamic $\text{RAM}$ consists of

A $\text{PLA}$ can be used

The output of a logic gate is ‘$1$’ when all its inputs are at logic ‘$0$’. Then gate is either

Data can be changed from spatial code to temporal code and vice-versa by using

$2$'s complement representation of a $16$ – bit number (one sign bit and $15$ magnitude bits) is $\text{FFFI}$. Its magnitude in decimal representation is

In a microprocessor, the register which holds the address of the next instruction to be fetched is

Dual-slope integration type Analog-to-digital converters provide