1) Lawn Sprinkler Design - Design the controller for a lawn sprinkler system. The controller accepts three inputs START, DRYNESS, and RAIN. It produces two outputs: ON, and FLOW. The description of input/output signals is as follows START-1. Start sprinkler in the morning (ON1), if and only if it is needed. DRYNESS : is a 2-bit input: 00= too dry, 01-dry, 10-wet, and I l-fully watered. RAIN1. It is raining and the sprinkler should not be turned on. ON = 1 . Turn on the sprinkler system. FLOW is a 2-bit output which controls the flow of water: 1 1 = maximum flow, 10 = medium flow, 01 = drip, and 00o flow . The sprinkler system is turned on (set ON-1), if START -1. The lawn is not fully watered and it is not raining The output flow should be "maximum when the lawn is too dry, medium when it is dry, and "drip" when it is wet. The sprinkler should be turned off when the lawn is fully watered. Design this controller using minimum logic for every output. Draw the schematic of the design using gates 2) Seven Segment Decoder - Search the internet to understand what a 7-segment display is. Design a binary-to-7 segment decoder using minimal digital logic gates as possible. Your design should include the logic design for all seven outputs. The design accepts a 4-bit BCD digit as inputs and produces appropriate outputs which will can be displayed using one 7-segment LED display. Draw the schematic of the design. 3) Frequency Divider System - Design a frequency divider circuit/system using digital logic timing/sequencing components. The idea is to divide an input signal (e.g. clock) frequency by 1, 2, 4, 8. Besides the clock and clear inputs, the divider receives a 2-bit, control input, ai,ao which specifies the divide by amount (aa 00: divide by 1, aa 01: divide by 2, a 10: divide by 4, aa 11: divide by 8). Clearly draw the schematic of the design