Computer Applications, Data Entry and E-Commerce Basics
Computer and data-entry basics
Know hardware, software, operating systems, files and folders. Useful shortcuts include Ctrl+C, Ctrl+V, Ctrl+S, Ctrl+P and Alt+Tab. In spreadsheets, understand cells, rows, columns, formulas, sorting and filtering. Data entry must be accurate and validated; critical fields may need double entry. Back up records and protect customer data.
E-commerce basics
Models include B2B, B2C and C2C. A marketplace hosts other sellers; a own online store sells its own stock. Order flow: browse, cart, checkout, payment, confirmation, fulfilment and return. Digital payments include UPI, cards and wallets. Confirm payment status and never store PINs or OTPs. Cybersecurity basics include strong passwords, screen locking and recognising phishing.
Worked example
Enter a customer's pin code 751024 and a 10-digit mobile number. The system validates the format. If validation fails, recheck the source document and ask the customer; do not guess missing digits. For an online order, confirm stock before accepting payment.
Traps
Typing without checking, sharing passwords, using personal email for business, ignoring failed payments and entering data in the wrong field are common.