# Recent questions tagged rom

1
Tabulate a truth table for an $8 \times 4$ ROM that implements the following four boolean functions: $A(x,y,z) = \sum (1,2,4,6)$ $B(x,y,z) = \sum (0,1,6,7)$ $C(x,y,z) = \sum (2,6)$ $D(x,y,z) = \sum (1,2,3,5,7)$
2
specify the size of a ROM ( Number of words and number of bits per words) that will accommodate the truth table for the following combinational circuit components: A binary multiplexer that multiplies two 4-bit numbers. A 4-bit adder-subtractor. A quadruple 2-to-1 line multiplexer with common select and enable inputs. A BCD-to-seven-segment decoder with an enable input.
3
A ROM chip of 4096 $\times$ 8 bits has two enable inputs and operates from a 5-volt power supply. How many pins are needed for the integrated-circuit package? draw a block diagram and label all the input and output terminals in the ROM
4
given a $32 \times 8$ ROM chip with the enable input, show the external connection which is necessary to construct a $128 \times 8$ ROM with 4 chips and a Decoder.
1 vote
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1 vote
6
What minimum size ROM is required to implement an unsigned 4-bit binary adder
7
Is it true In SRAM information in memory gets lost as soon as power is switched off
8
How many address and data lines in 1M×16 ROM system
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10
Specify the size of a ROM (number of words and number of bits per word) that will accommodate the truth table for the following combinational circuit : a code converter from a 4-digit BCD number to a binary number.
11
The size of the $ROM$ required to build an 8-bit adder / subtractor with mode control, carry input, carry output and two's complement overflow output is given as $2^{16} \times 8$ $2^{18} \times 10$ $2^{16} \times 10$ $2^{18} \times 8$
12
I am getting (C). But answer given is (B). Where I have gone wrong?
13
What is the minimum size of ROM required to store the complete truth table of an $8-bit \times 8-bit$ multiplier? $32 K \times 16$ bits $64 K \times 16$ bits $16 K \times 32$ bits $64 K \times 32$ bits
A ROM is used to store the table for multiplication of two $8$-bit unsigned integers. The size of ROM required is $256 \times 16$ $64 K \times 8$ $4 K \times 16$ $64 K \times 16$
A ROM is used to store the Truth table for binary multiple units that will multiply two $4-bit$ numbers. The size of the ROM (number of words $\times$ number of bits) that is required to accommodate the Truth table is $M \text{ words}\times N \text{ bits}$. Write the values of $M$ and $N$.
The amount of ROM needed to implement a $4-bit$ multiplier is $64$ bits $128$ bits $1$ Kbits $2$ Kbits