Question

what do u mean by bar code....?...​

Answer 1

Answer:

A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths and spacings of parallel lines. ... The invention was based on Morse code that was extended to thin and thick bars.

Answer 2

Answer:

this is correct answer

Explanation:

I hope this answer is helpful for you