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Digital Electronics

Digital Electronics
In the toggle mode a JK flip-flop has

 J = 0, K = 0.
 J = 1, K = 1.
 J = 1, K = 0.
 J = 0, K = 1.

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Digital Electronics
In simplification of a Boolean function of n variables, a group of 2m adjacent 1s leads to a term with

 n + m literals
 m + 1 literals less than the total number of variables
 m – 1 literals less than the total number of variables
 n – m literals

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Digital Electronics
A bubbled NAND gate is equivalent to a

 OR gate
 X-OR gate
 NOR gate
 NAND gate

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Digital Electronics
A signed integer has been stored in a byte using 2’scomplement format. We wish to store the same integer in 16-bit word. We should copy the original byte to the less significant byte of the word and fill the more significant byte with

 0
 Equal to the MSB of the original byte
 Complement of the MSB of the original byte
 1

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Digital Electronics
Dual slope ADC has R = 1 KΩ and C = 0.22 nanofarad has charging and discharge times for some voltage is 9 ns and 3 ns respectively. The reference Voltage is 2.2 V. What is the peak voltage reached by triangular wave during charging?

 900 mV.
 90 mV.
 30 mV.
 300 mV.

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Digital Electronics
Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is.

None of these
10 CPS
120 CPS
12 CPS

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