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Learn the meaning and usage of HTTP response status codes, which indicate the server's response to a client's request. The codes are classified into five categories: 1xx, 2xx, 3xx, 4xx, and 5xx.
lp0 on fire is an outdated error message for printer problems on Unix and Linux systems. Learn about the history, causes and variations of this phrase, and how it ...
Learn how to fix Temporary Error 20 in AOL Mail, which occurs when you access your account from multiple devices or browsers simultaneously. Find out the possible ...
Learn about the process of power-on self-test (POST) that checks the hardware components of a computer or other digital device after it is powered on. Find out the history, purposes, and methods of POST in IBM PC compatible computers and other systems.
AOL Mail offers secure and personalized email with features like AOL Mail, news, and weather for free. You can also access your email on the go with an iOS & Android app and get help from experts.
Product activation is a license validation procedure required by some proprietary software programs to prevent unauthorized use. Learn how product activation works, its history, criticisms, and related terms such as dongle and digital rights management.
Printer tracking dots, also known as machine identification code (MIC), is a digital watermark that identifies the device used to print a document. Learn about the history, technical aspects, visibility, practical application and protection of privacy of this feature.
Inkjet printing is a type of computer printing that recreates a digital image by propelling droplets of ink onto paper and plastic substrates. Learn about the origin, methods and applications of inkjet printing, as well as the difference between continuous and drop-on-demand technologies.