Which of the following computing devices did not exist in the pre-computing age to the 19th century? by Sunday | Jan 18 | Computer Studies WAEC | 0 comments A. Napier’s bone B. Abacus C. ENIAC D. Slide Rule Correct Answer: Option C – ENIAC Users Also Read These:The computing devices invented by Charles Babbage are?SS1 First Term Computer Studies Lesson Note –…Theory Questions: Devices Used for Computing Before…The pre-computing age device which made use of beads…Muhammad es Sadek was a 19th-century ruler of?