All IC (Integrated Circuit) Chips comes under this category.
IC DS1307 is a low power, fully Binary Coded Decimal (BCD) Real Time Clock (RTC) / Calendar with 56 Bytes of General Purpose SRAM. Address and data is transferred though I2C bus. It has built in circuit for detecting power failures and to switch backup battery supply. Current consumption is less than 500nA in battery backup mode. It can be easily interfaced with microcontrollers having I2C modules.
HT12E HT12D Encoder Decoder Pair
HT12E and HT12D are Encoder Decoder ICs manufactured by Holtek for Remote Control Applications. These ICs can be used with ASK RF Transmitter and Receiver modules. By using the paired HT12E encoder and HT12D decoder we can transmit 12 bits of parallel data serially. HT12D simply converts serial data to its input (may be received through RF receiver) to 12 bit parallel data. These 12 bit parallel data is divided in to 8 address bits and 4 data bits. Using 8 address bits we can provide 8 bit security code for 4 bit data and can be used to address multiple receivers by using the same transmitter.
L293D Quadruple Half H Driver
L293D is a quadruple half H Bridge driver having high current capability which is commonly used in electronic projects for driving DC Motors, Stepper Motors, Relays, Solenoids etc. L293D can drive bidirectional currents up to 600mA at voltages ranging from 4.5V to 36V. It is compatible with Arduino Boards, Raspberry Pi, PIC, Atmel AVR, 8051 microcontrollers.
PIC 16F877A Microcontroller
This powerful (200 nanosecond instruction execution) yet easy-to-program (only 35 single word instructions) CMOS FLASH-based 8-bit microcontroller packs Microchip's powerful PIC architecture into an 40- or 44-pin package and is upwards compatible with the PIC16C5X, PIC12CXXX and PIC16C7X devices. The PIC16F877A features 256 bytes of EEPROM data memory, self programming, an ICD, 2 Comparators, 8 channels of 10-bit Analog-to-Digital (A/D) converter, 2 capture/compare/PWM functions, the synchronous serial port can be configured as either 3-wire Serial Peripheral Interface (SPI™) or the 2-wire Inter-Integrated Circuit (I²C™) bus and a Universal Asynchronous Receiver Transmitter (USART). All of these features make it ideal for more advanced level A/D applications in automotive, industrial, appliances and consumer applications.
PIC 18F2550 Microcontroller
PIC 18F4550 Microcontroller
Ideal for low power (nanoWatt) and connectivity applications that benefit from the availability of three serial ports: FS-USB(12Mbit/s), I²C™ and SPI™ (up to 10 Mbit/s) and an asynchronous (LIN capable) serial port (EUSART). Large amounts of RAM memory for buffering and Enhanced Flash program memory make it ideal for embedded control and monitoring applications that require periodic connection with a (legacy free) personal computer via USB for data upload/download and/or firmware updates.
ULN2803A Driver IC
ULN2803A is a one of the most commonly used High Current, High Voltage Darlington Transistor Array IC. It contains 8 NPN darlington pairs with common cathode clamp diodes for each outputs for switching inductive loads. The current rating of each darlington pair is 500mA and you may connect two or more darlington pairs in parallel to increase current capability. This IC is commonly used in applications such as Relay Driving, Hammer Driving, Lamp Driving, LED and Gas Discharge Display Driving etc.