$3.[6$ points$]$ Explain or illustrate the main differences between the static and dynamic LCD drives.

Now assume a calculator that can display several digits. Develop mathematical expressions that provide the number of Voltage sources $($LCD connectors$)$ needed for $($a$)$ a static and $($b$)$ a dynamic LCD drive as a function of the number of digits. Define each term in your expressions. Use these to compare the difference in the number of sources $($connectors$)$ needed. Specify any assumption that you need to make. What is one advantage and disadvantage of each technique.