Digital Electronics Objectives Part 13

241 . Bit is the name given to a binary digit.

242 . 2-1is the weight of the second bit to the left of the binary point.

243 . Monolithic technology is widely used in the manufacture of integrated circuit.

244 . None of the above conversion is incorrect.

245 . A three-input AND gate is shown in Fig. 40. If the circuit works off the positive voltage mode logic with logic levels 1 = +5 V and 0=0 V, the binary state of output will be F=0.

246 . In Fig. 41 the inputs to a two-input OR gate are shown. This gate works off positive voltage mode logic. The logic levels are 1=+5 V and 0=0 V. The output will be F=1.

247 . The binary logic levels of a gate circuit are 1 = +12V and 0 = 0V. Voltage mode, positive logic is used.

248 . F=1 is the output of a NOT gate when its input C = 0.

249 . Inputs for a NOR gate are A and B waveforms as shown in Fig. 41. The output will be as shown in figure B.

250 . The maximum propagation value in case of 7400 NAND gate is less than 20 nano-seconds.

251 . The zero-state output of a gate circuit is measured and found to be the 0.2 V typical value. 0.6 V noise voltage could the output receive without causing a false 1 to the circuits tied at its output.

252 . The voltage needed for a TTL IC power supply is 5V dc.

253 . The simplified complement of the function 𝐢D + BD is 𝐃+ 𝐁𝐂.

254 . A simplified complement of the function 𝐴𝐡𝐢+𝐴𝐡𝐷+𝐡𝐷 is 𝑨𝑩+𝑩𝑫+ 𝑩π‘ͺ 𝑫.

255 . The Boolean function F = 𝐴𝐡𝐢+ 𝐴𝐡𝐷 don’t care = (AB + 𝐴𝐡) (𝐢+𝐷) when simplified it becomes any of the following EXCEPT𝑨π‘ͺ+𝑨𝑫.

256 . The Boolean function F = 𝐡𝐢+ 𝐴𝐡+𝐴𝐡𝐢 don’t care = 𝐴𝐡𝐢+ 𝐴𝐡𝐢 when simplified becomes 𝑩+π‘ͺ.

257 . The Boolean function AB + 𝑨𝑩π‘ͺ+ 𝑨π‘ͺ when simplified become AB + C.

258 . A minterm is a square on a karnaugh map.

259 . A certain 3-input, 1-output device has the voltage characteristics displayed (numerical values are volts)

If the logical 0 is equivalent to 5 volts and the logical 1 is equivalent to 0 volts, the logical equation describing this device is 𝑨𝑩+ π‘ͺ.

260 . An operating system that allows the user to correct input data has Text editing.