The 7475 / 74LS75 is a quad 4-bit bistable latch IC featuring transparent latching and complementary outputs (Q & Q̅). Designed using Low Power Schottky TTL logic, it provides high-speed data latching ideal for use in memory storage, data buffering, and control logic applications.
The EM18 RFID Long Range Module is a 125kHz RFID reader that efficiently reads RFID tags/cards within 8–12 cm range. It offers serial (UART/TTL) and Wiegand outputs, making it ideal for security systems, attendance tracking, and access control applications. Compatible with Arduino, Raspberry Pi, and microcontrollers.