Seven-segment display letter to be unambiguous, merely for the words as a whole to be readable. Similar displays with fourteen or sixteen segments are available allowing less-ambiguous representations of the alphabet. Using a restricted range of letters that look like (upside-down) digits, seven-segment displays are commonly used by school children to form words and phrases using a technique known as "calculator spelling". Seven-segment display A seven-segment display (SSD), or seven-segment indicator, is a form of electronic display device for displaying decimal numerals that is an alternative to the more complex dot matrix displays. Seven-segment displays are widely used in digital clocks, electronic
Sixteen Tons Sixteen Tons "Sixteen Tons" is a song written by Merle Travis about a coal miner, based on life in coal mines in Muhlenberg County, Kentucky. Travis first recorded the song at the Radio Recorders Studio B in Hollywood, California on August 8, 1946. Cliffie Stone played bass on the recording. It was first released in July 1947 by Capitol on Travis's album "Folk Songs of the Hills". The song became a gold record. The line "You load sixteen tons and what do you get? Another day older and deeper in debt" came from a letter written by Travis's brother John.