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1. How is the LCD placed into the 4-bit data mode?
2. How is the cursor in an LCD positioned to a specific, user-selected location on the display?
3. Given the state of RS, E and R/W~, and the data (in hex) needed to send an 'H' to the LCD for display.
4. What is minimum pulse width for the control signal EN in a ST7036 LCD.
5. Is the chip enables BCS~active-HIGH or active~LOW in this LCD?
6. State briefly the advantage of operating the LCD in each of the following data modes:
i. 8-bit parallel
ii. 4-bit parallel
iii. serial
7. Explain how a keypad interface IC works?
8. Given the bit pattern on Port A is PA7-4 = "1101" and data on PA3-0 = "1101", identify the active key.
A reciprocal 2 port microwave device has vswr of 1.5 andan insertion loss of 2db. Find the magnitudes of S- parameters forthe device.
The parking lot of the Spenditall Megamall has an area of 128 ac. It is partially landscaped to provide some areas of grass. Assume that an average of 63% of the water that falls on the parking lot will flow
mutual shifted by 90 degree currents through each of both windings of the single phase A motor are (5.5+1.7) A but RMS voltage of the supply is 220 V.How big will be torque on shaft of the motor is efficiency factor is 0.7.
A filter with a great deal of attenuation must be placed in an amplifier chain. Ignoring all considerations other than the desire to minimize noise figure, would it be preferable to put the filter before or after a low noise amplifier Why
An abrupt silicon pn junction at zero bias has dopant concentrations of Na = 1017/cm3 and Nd = 5 x 1015 cm-3 at T = 300K. (a) Calculate the Fermi level on each side of the junction with respect to the intrinsic Fermi level.
For arrangements F and G find the expression for the electric field at the position of the test charge due to the two fixed charges
Write the expression for the current through the capacitor after the switch is closed. The circuit is a 60 Volt circuit
Determine (a) the input to the detector, (b) the optimum threshold (to be compared with the detector input) that minimizes the average probability of error, and (c) the average probability of error.
With the multi function gate: F = X'AB + YA'B + X'AB + YAB' 1. Can this gate be used as an inverter If yes, how 2. Will the change in the number of inputs or outputs affect the number of operation select lines Explain.
Calculate the generated e.m.f. And the load angle if the generator operates at its full load under Lagging power factor of 0.82.
You have an amplifer with a nominal open-loop gain of 1000 (A = 1000), but the variance in the gain is 20% (meaning that the open-loop gain ranges in value from 800 to 1200). You want to use feedback to try to desensitize the gain.
Solar panel saves energy in battery from the battery works a compressor to pressurized vissel then a feedback keeps the compressor working
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