Data entry is the foundation of everything else in bookkeeping and accounting. You need to enter the right numbers into the right accounts to truly understand how the business is doing.
Modern bookkeeping data entry
Nowadays you can bypass a lot of the manual data entry by linking all your business systems together so that information flows directly into your books from sales systems, bank accounts, and receipt scanners.
Figure 2, Data flows into accounting software from systems that are used to process sales or purchases.