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Punched card. A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card[ 1] or punched-card[ 2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines . Punched cards were widely used in the 20th ...
Punched card input/output. A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with ...
Punched cards. A punched card is a flexible write-once medium that encodes data, most commonly 80 characters. Groups or "decks" of cards form programs and collections of data. The term is often used interchangeably with punch card, the difference being that an unused card is a "punch card," but once information had been encoded by punching ...
Metadata about the images and the books from which they come is also available for download on Github. Pixnio – A large collection of high resolution public domain images. Free for personal and commercial use, no attribution required. Devostock.com Over 160,000 free professional images for commercial use.
v. t. e. Child-selling is the practice of selling children, usually by parents, legal guardians, or subsequent custodians, including adoption agencies, orphanages and Mother and Baby Homes. Where the subsequent relationship with the child is essentially non-exploitative, it is usually the case that purpose of child-selling was to permit adoption .
The IBM 604 Electronic Calculating Punch was the world's first mass-produced electronic calculator along with its predecessor the IBM 603. [1] It was an electronic unit record machine that could perform multiple calculations, including division. It was invented and developed by Ralph Palmer, Jerrier Haddad and Byron Phelps.
The first edition of The Merck Manual was published in 1899 by Merck & Co., Inc. for physicians and pharmacists and was titled Merck's Manual of the Materia Medica. [6] [7] The 192 page book which sold for US $1.00, was divided into three sections, Part I ("Materia Medica") was an alphabetical listing of all known compounds thought to be of therapeutic value with uses and doses; Part II ...
The Optional Protocol on the Sale of Children, Child Prostitution and Child Pornography is a protocol to the Convention on the Rights of the Child and requires parties to prohibit the sale of children, child prostitution and child pornography . The Protocol was adopted by the United Nations General Assembly in 2000 [2] and entered into force on ...