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.