 
 <prompt> Wetin dey use tiny pieces wey dey come together to show numbers and letters? Given di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: Alphanumeric LEDs dey available in seven-segment, starburst and dot-matrix format. Seven-segment displays fit handle all numbers and small set of letters. Starburst displays fit show all letters. Dot-matrix displays usually dey use 5x7 pixels per character. Seven-segment LED displays bin dey popular for the 1970s and 1980s, but as liquid crystal displays dey gain ground with their low power needs and better display flexibility, e don reduce the popularity of numeric and alphanumeric LED displays. 