updated README

README.md

@@ -1,2 +1,83 @@
 # Embedded-Drivrers
-Embedded Systems Drivers
+## Embedded Systems Drivers for ATmega32 & ATmega32L
+Atmega32 is an 8-bit AVR microcontroller with 32K bytes In-System Programmable Flash
+
+## Contents
+1. [Drivers]()
+
+    - [Analog to Digital Converter (ADC)](https://github.com/1brahimmohamed/Embedded-Drivers/tree/master/ADC)
+    - [General Purpose Input/Output (GPIO) (DIO)](https://github.com/1brahimmohamed/Embedded-Drivers/tree/master/GPIOs)
+    - [Pluse Width Modulation (PWM)](https://github.com/1brahimmohamed/Embedded-Drivers/tree/master/PWM)
+    - [Input Capture Unit (ICU)](https://github.com/1brahimmohamed/Embedded-Drivers/tree/master/ICU)
+    - [Liquid Crytsal Display (LCD)](https://github.com/1brahimmohamed/Embedded-Drivers/tree/master/LCD)
+    - [Temperature Sensor  LM35](https://github.com/1brahimmohamed/Embedded-Drivers/tree/master/LM%2035%20-%20Temperature%20Sensor)
+    - [Ultrasonic HCSR04](https://github.com/1brahimmohamed/Embedded-Drivers/tree/master/HC-SRO4%20-%20Ultrasonic)
+    - [DC Motor]()
+
+1. [Atmega32 Features](#atmega32-features)
+
+### Atmega32 Features: 
+
+- High-performance, Low-power AVR® 8-bit Microcontroller
+-  Advanced RISC Architecture
+    - 131 Powerful Instructions – Most Single-clock Cycle Execution
+    - 32 x 8 General Purpose Working Registers
+    -  Fully Static Operation
+    -  Up to 16 MIPS Throughput at 16 MHz
+    -  On-chip 2-cycle Multiplier
+-  Nonvolatile Program and Data Memories
+    - 32K Bytes of In-System Self-Programmable Flash
+
+        Endurance: 10,000 Write/Erase Cycles
+
+    -  Optional Boot Code Section with Independent Lock Bits
+
+        In-System Programming by On-chip Boot Program
+        True Read-While-Write Operation
+
+    - 1024 Bytes EEPROM
+
+        Endurance: 100,000 Write/Erase Cycles
+    -  2K Byte Internal SRAM
+    -  Programming Lock for Software Security
+
+- JTAG (IEEE std. 1149.1 Compliant) Interface
+    - Boundary-scan Capabilities According to the JTAG Standard
+    - Extensive On-chip Debug Support
+    - Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
+
+- Peripheral Features
+    - Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
+    - One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture
+Mode
+    - Real Time Counter with Separate Oscillator
+    - Four PWM Channels
+    - 8-channel, 10-bit ADC
+    - 8 Single-ended Channels
+    - 7 Differential Channels in TQFP Package Only
+    - 2 Differential Channels with Programmable Gain at 1x, 10x, or 200x
+    - Byte-oriented Two-wire Serial Interface
+    - Programmable Serial USART
+    - Master/Slave SPI Serial Interface
+    - Programmable Watchdog Timer with Separate On-chip Oscillator
+    - On-chip Analog Comparator
+
+- Special Microcontroller Features
+    - Power-on Reset and Programmable Brown-out Detection
+    - Internal Calibrated RC Oscillator
+    - External and Internal Interrupt Sources
+    - Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby
+and Extended Standby
+- I/O and Packages
+    - 32 Programmable I/O Lines
+    - 40-pin PDIP, 44-lead TQFP, and 44-pad MLF
+-  Operating Voltages
+    -  4.5 - 5.5V for ATmega32
+    -  2.7 - 5.5V for ATmega32L
+-  Speed Grades
+    -  0 - 8 MHz for ATmega32L
+    -  0 - 16 MHz for ATmega32
+-  Power Consumption at 1 MHz, 3V, 25°C for ATmega32L
+    -  Active: 1.1 mA
+    -  Idle Mode: 0.35 mA
+    -  Power-down Mode: < 1 μA