The 788BS is an 8x8 LED matrix display with 64 red LEDs arranged in a grid pattern. It uses a common cathode configuration where rows are anodes and columns are cathodes. The display requires row and column scanning to light up individual LEDs, typically controlled by microcontrollers or shift registers.
The 788BS uses a common cathode configuration. To light an LED, set the corresponding row (anode) HIGH and column (cathode) LOW. Due to current limitations, multiplexing is required - only one row should be active at a time, cycling through all rows quickly to create persistence of vision. Current limiting resistors (typically 220-470Ω) should be used on each column or row to protect the LEDs.