The CD4011B, CD4012B, and CD4023B are NAND gates provide the system designer with direct implementation of the NAND function and supplement the existing family of CMOS gates. All inputs and outputs are buffered IC SOP-14 Pins Package.
The voltage to pulse width modulation (PWM) can transform analog voltage into 0-100% PWM duty cycle output. The converted voltage range can be selected (using jumper) either to be from 0 to 5V or 0 to 10V.
The CD4013BT are consists of two identical, independent data-type flip-flops. Each flip-flop has independent data, set, reset, and clock inputs and Q and Q outputs IC SOP-14 Pins Package.
The Micro SD TF Card Module is SPI interface via file system driver, microcontroller system to complete the MicroSD card reading and writing functions.
The D81C55HC-2 is a 2k-bit static RAM (256 bytes) with parallel I/O ports and a timer. It uses silicon gate CMOS technology and consumes a standby current of 100 micro ampere, maximum, while the chip is not selected.