The document explains the concepts of serial and parallel communication, highlighting that serial communication sends data one at a time, while parallel communication sends multiple bits simultaneously. It describes the Serial Peripheral Interface (SPI) used for communication between microcontrollers and peripherals, involving clocks and data lines. Additionally, it outlines how Analog-to-Digital Converters (ADCs) function by converting analog signals into digital signals.

1. serial communication, parallel communication, SPI and ADC's. Write a paragraph about serial
communication and how ADC's work.
Solution
Serial Communication:
Serial Communication is process of sending data one by one at a time over a communication
channel.
Parallel communication:
Parallel Communication is method of conveying multiple bits at a time over a communication
channel.
Serial Peripheral Interface: This is used to send data between microcontrollers and small
peripherals. It uses clocks and data lines along with a select line to choose the device we wish to
talk to.
ADC working:
ADC takes input signal as analog signal. It uses a circuit which converts this analog signal to
appropriate digital signal. You can refer to wikipedia or any other links for the circuit which
converts analog signal to digital signal.