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i want previous vlsi question papers
A circuit diagram is used simplified graphical drawing representing an electrical circuit. It shows the actual wire connections using a block diagram or layout diagram. It does not show a physical depiction of the arrangement of components.
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1. HDL Design 2.Schematic Design 3.Floor planning
VLSI (very large scale integration) technology places tens of thousands of transistors (and their interconnections) on a very pure single-crystal chip of silicon.A single solar cell is just ONE very largearea junction diode, operating in self produced reverse bias mode.A common kind of solar cell starts with the same very pure single-crystal silicon, but the later processes are different from VLSI manufacturing processes.Solar cells don't include any transistors,So you could say that single-crystal solar cell uses one small part of VLSI technology, plus a bunch of its own unique processes.Other kinds of solar cell use cast polycrystalline silicon or amorphous silicon or some other starting material.As of 2007, the highest-efficiency solar cells use 3-junction gallium arsenide instead of silicon.Their manufacturing processes are even less like VLSI manufacturing.