Question $3(3$ points$)$

The Systems Thinking ideas of Input $$ Process $$ Output are fundamental to

designing, developing and maintaining computer systems. In a Point$-$of$-$Sales $($POS$)$

system at a grocery store, which of the following is an input? $($Select all that apply,

omit those that do not$)$

Scanning customer's item

Sales Receipt

Calculating total of tax

Purchase History Report

Receiving customer payment