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Both DTL and TTL are based on the saturating BJT inverter. The transistor acts as a switch that connects or disconnects the collector and emitter. The switch is closed when sufficient base current is applied to saturate the transistor. While the BJT technologies have dominated during the 1970s, logic families based on MOSFET technology are nowmore widely used because of the advantages of fewer fabrication steps and generally lower power consumption. After PMOS and NMOS technologies, CMOS emerged as the dominant MOS technology and remains so today. Let us consider the simple MOSFET inverter with resistive load shown in Figure (a), quite similar in principle to the BJT inverter, although the circuit is rather impractical, as we shall see later. The load line for RD = 23 k and VDD = 7 V is shown along with the transistor I-V characteristics in Figure (b). On finding vout (= vDS) for different values of vin (= vGS), the voltage-transfer characteristic (vout versus vin) is plotted in Figure (c). By choosing the low range to be 0 to 3 V (i.e., less than the threshold voltage) and the high range to be 5 to 7 V, we can see that any input voltage in the low range gives an output of 7 V (high) and inputs in the high range give outputs in the low range. Thus, the circuit is seen to be an inverter.
Sign flag Since D 7 bit in the results is 0sign flag is reset. This also shown that the results is positive.
Q. Explain Cellular Telephone Systems? Today radio-based systems make it possible for mobile people to communicate via cellular telephone systems while traveling on airplanes a
What do you understand by SEGMENT assembler directive? SEGMENT: This directive explains to the assembler the start of a segment along with name segment-name. The segment
Define Sampling Frequency? Since real analog signals consist of several frequencies, spectrum of the input signals should be limited to make sure that no signal energy exists a
Give the register organization of 8257? The 8257 do the DMA operation over four independent DMA channels. Each of the four channels of 8257 has a couple of two 16-bit registers
create a matrix of 5x6. with identical columns and rows ranging from 200 to 1000 in equal increments
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#queComputers are frequently used in check-writing systems, such as payroll and accounts payable applications. Many stories circulate regarding weekly pay- checks being printed (by
transistor biasing stabilization problems
Data bus The data bus is the group of 8 bit used to carry data. There line are bidirectional data can flow in both directions i e form microprocessor to peripherals
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