8 to 3 Line Priority Encoder IC - 74HC148 The 74HC Series 74HC148 is a 16 Pin 8-Line to 3-Line Priority Encoder IC having 2V to 6V Operating Voltage range with a 5.2mA output current and low power consumption. It encodes Eight Data Lines to a 3-Line Binary. It features priority decoding of the inputs to ensure that only the highest-order data line is encoded. Cascading circuitry (enable input EI and enable output EO) has been provided to allow octal expansion without the need for external circuitry. Data inputs and outputs are active at the low logic level. Pinout: Pinout of 74HC148 IC

8 Way Slide Switch 2.54mm Pitch (Pack of 2) 8 Way DIP switches for reliable operation by secure snap-in.  DIP Switch Used on a printed circuit board along with other electronic components and is commonly used to customize the behavior of an electronic device for specific situations. Widely used in data processing, communication, remote control and anti-theft alarm system need to manually automatic programming products. 8 position or 8 in 1, Dual In-Line Package (DIP) SPDT slide switch, namely the more traditional toggle switch is a set of electrical switches which is packed in a small box or housing. This DIP single pole double throw (SPDT) switch forces the operator to choose between connecting to either one of two terminals as such the switch will remain connected to one or the other, and the two terminals will never be connected. This switch is designed to be easily mounted on printed circuit boards to provide various ranges of input to the electronic device. You can easily control the input by using the DIP switch. Applications: Widely used in circuit boards, breadboards and All PCB Projects, Perfect as a toggle or on off switch for your projects.

8-Bit Serial In/Parallel Out Shift Register IC - 74HC164 The 74HC Series 74HC164 IC utilizes advanced silicon-gate CMOS technology. It has high noise immunity and low consumption of standard CMOS integrated circuits. It also offers speeds comparable to low-power Schottky devices. This 8-bit shift register has gated serial inputs and CLEAR. Each register bit is a D-type master/slave flip-flop. Inputs A & B permit complete control over the incoming data. A LOW at either or both inputs inhibits the entry of new data and resets the first flip-flop to the low level at the next clock pulse. A high level of one input enables the other input which will then determine the state of the first flip-flop. Data at the serial inputs may be changed while the clock is HIGH or LOW, but only information meeting the setup and hold time requirements will be entered. Data is serially shifted in and out of the 8-bit register during the positive-going transition of the clock pulse. Clear is independent of the clock and accomplished by a low level at the CLEAR input. The 74HC logic family is functionally as well as pin-out compatible with the standard 74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and the ground. Pinout: Pinout of 74HC164 IC Pin no. Pin name The main function 1 A Gated Serial Input 1 2 B Gated Serial Input 2 3,4,5,6,10,11,12,13 Parallel Output (A-H) Parallel Output Pins 9 CLR Clear 1 Active-Low 7 GND Ground Pin 8 CLK Clock 14 VCC Power Input Pin

8-bit Serial to Parallel Shift Register IC - 74HC595 The 74HC Series 74HC595 high-speed shift register utilizes advanced silicon-gate CMOS technology. This device possesses the high noise immunity and low power consumption of standard CMOS integrated circuits, as well as the ability to drive 15 LS-TTL loads. This device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has 8 3-STATE outputs. Separate clocks are provided for both the shift register and the storage register. The shift register has a direct-overriding clear, serial input, and serial output (standard) pins for cascading. Both the shift register and storage register use positive-edge triggered clocks. If both clocks are connected together, the shift register state will always be one clock pulse ahead of the storage register. The 74HC logic family is speed, function, and pin-out compatible with the standard 74LS logic family. All inputs are protected from damage due to static discharge by internal diode clamps to VCC and the ground. Pinout: Pinout of 74HC595 IC

8-bit Up/Down Binary Counter IC - CD40193 The CD40193 IC up/down counters are monolithic complementary MOS (CMOS) integrated circuits. The CD40192BM and CD40192BC are BCD counters, while the CD40193BM and CD40193BC are binary counters. Counting up and counting down is performed by two count inputs, one being held high while the other is clocked. The outputs change on the positive-going transition of this clock. These CD4x Series IC counters feature preset inputs that are enabled when the load is a logical ‘‘0’’ and a clear which forces all outputs to ‘‘0’’ when it is at a logical ‘‘1’’. The counters also have to carry and borrow outputs so that they can be cascaded using no external circuitry. All inputs are protected against damage due to static discharge by clamps to VDD and VSS. check out : Divide by 8 Counter/Divider IC - CD4022 Pinout: Pinout of CD40193 IC Application Up/Down difference counting Multistage ripple counting Synchronous frequency divider A/D or D/A conversion BCD counting

8-CH 12V ULN2003 Based Relay Board The 8-CH 12V Relay can control any device just like a switch contact. Its contact is isolated from the driven circuit. Features: LED Indication of Relay ON. Power Indication LED. ULN2803 Relay Driving IC. ON/OFF Power Switch. Direct input from 3-5V Microcontroller for relay control. Output terminal for relay contacts. Provision of the male header for wire connection. Powered from external 12V or from the male header. Contact Rating: 5A at 240V AC Note: It is important that the microcontroller share ground with the relay board along with other control signals else it will not able to control the relay.

8-input NAND Gate IC - 74HC30 The 74HC Series 74HC30 is a 14 Pin 8-input NAND Gate IC having 2V to 6V Operating Voltage with an output current of 5.2mA.  Its input contains clamp diodes which enable the use of current limiting resistors to interface inputs to voltages in excess of VCC. Pinout: Pinout of 74HC30 IC

8025 12V DC Cooling Fan This is a High-Quality 8025 cooling fan, which consists of a 4-pole Brushless DC Motor with a precise vapor bearing system, this cooling fan can deliver an airflow up to 8.0 CFM, which is sufficient enough to keep the electronics cool. This creates a vibrating and shaking of the rotating rotor is prevented. Since there is no contact between the bearing and shaft, the bearing touches the result is just the surrounding air. The result is the creation of a cooling fan with exceptional features such as a uniform rotation, low noise, and special durability to meet any requirement. Features: Good airflow Noiseless Performance Easy to install and connect. Also check 12V CPU cooling fan sold by Iotcart.  The fan is 80 x 80mm and has a ball bearing. It can be used in CPUs, incubators, and 3D printers.

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8051 Development Board (Made in India) The 8051 Development Board is equipped with an Atmel AT89S52 Microcontroller IC and an RS232 chip. It features a DIP 40 Pin IC Socket for easy insertion and removal of chips, and can support a range of chips including AT89S51, AT89S52, P89V51RD2, and 8052. The board is built with a high-quality FR-4 (1.6 mm) PCB. In addition, the board has an on-board RS232 circuit that enables easy communication with a PC and other RS232 serial devices such as GPS modules, GSM modems, and RFID. It also has an extra Vcc bus (5V and 12V) and GND bus for power supply to external peripherals. The 8051 board has an on-board bridge rectifier, allowing it to accept both AC and DC input voltages for power supply. It is also equipped with a 5mm Power Plug-in DC Jack, a Power ON-OFF switch, a 5V regulator (LM7805) circuit, and a power indication RED LED. Other features of the board include an on-board reset button, a quartz crystal 11.05892 MHz, a GREEN USER LED at Pin P2.0, an input user switch Pin P3.3, and an input external interrupt switch (INT1) at P3.3 through jumper JP2. Port extensions are provided for all PORT with detailed labeling for easy identification of pins, and external pull-up resistors are included for port use. The development board also has an on-board ISP connector for loading HEX files into microcontrollers such as AT89S51/52. It has four 3mm mounting holes for easy mounting. read more : How to Choose a Microcontroller Applications Embedded Systems Robotics Internet of Things (IoT) Industrial Automation