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Explain Lithography.
Lithography- This is one of the processes which is carried out throughout manufacture of integrated circuits. Silica oxide (SiO2) layer is thermally grown on the wafer surface. The pattern is transferred by mask to the oxide layer as given- A photo resist liquid is equally applied over the oxide layer and dried. Photo resist is a material that changes its solubility in exact organic solvents, while exposed to ultra violet light. Non-polymerised parts are after that dissolved using organic solvents. This oxide layer below these parts is here etched using net chemical etchant. Through, this process, the pattern is transferred from the mask to the oxide. Throughout next diffusion, the layer of SiO2 serves as a mask.
Describe soldering materials and their uses. The process of joining two or more metals is termed as soldering. An alloy of two or more metals of low melting point utilized for
Classify the following signals as energy signals or power signals. Find the normalized energy or normalized power of each. a. ? ? , 0, 0 0, at Ae t a x t elsewhere
The sinusoidal voltage source in the circuit shown in Fig. is developing an rms voltage of 2000 V. The 4 ? load in the circuit is absorbing four times as much average power as the
Let both coherent ASK and coherent PSK systems transmit the same average energy per bit interval and operate on the same channel such that E b /N 0 = 18. Determine the bit-error p
Q. Expain different control function categories,And also discuss that how they help in signalling and control. Ans: In some switching systems, Control subsystem may be a
what is difference between dual trace and dual beam cro?
With respect to serial communication define the baud rate. The rate of data transfer into serial data communication is denoted in bps. Bits per second (bps) are the rate of in
Simplified operation: Figure: Simple circuit to show the labels of a bipolar transistor. The essential value of a transistor comes from its capability to make use
defination
FIG. 2 Car Park Simulation Consider the above diagram, FIGURE 2, of the car park. The object of this assignment is to write a program to operate the barriers to allow the cars in
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