Dot-matrix (impact) printers form characters with tiny pins that strike an ink ribbon, enabling carbon copies and reliable printing on continuous forms. While largely replaced by inkjet and laser for general office use, impact printers remain valuable in industrial, logistics, and point-of-sale settings.
Locking your phone prevents accidental calls, purchases, deleted files and privacy problems. Use PIN/biometrics, short auto-lock, Guided Access/Guest mode and simple habits like face-down storage to avoid pocket dials and unwanted activity.
Cingular's mid-2000s Pay-As-You-Go let customers prepay minutes and avoid contracts. Since Cingular merged into AT&T, prepaid offerings have shifted toward monthly bundles and modern refill methods. Check current carrier plans for exact rates, rollover and expiry rules.