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2. Hipster PDA - Wikipedia

   en.wikipedia.org/wiki/Hipster_PDA

   A Hipster PDA. The Hipster PDA is a paper-based personal organizer, popularized by Merlin Mann in 2004. [1] Originally a tongue-in-cheek reaction to the increasing expense and complexity of personal digital assistants (PDA), the Hipster PDA (said to stand for "Parietal Disgorgement Aid" and often abbreviated to "hPDA") comprises a sheaf of index cards held together with a binder clip.

3. Tickler file - Wikipedia

   en.wikipedia.org/wiki/Tickler_file

   A simple tickler file may use any number of folders. A tickler file or 43 Folders System is a collection of date-labeled file folders organized in a way that allows time-sensitive documents to be filed according to the future date on which each document needs action. Documents within the folders of a tickler file can be to-do lists, pending ...

4. Library catalog - Wikipedia

   en.wikipedia.org/wiki/Library_catalog

   The card catalog was a familiar sight to library users for generations, but it has been effectively replaced by the online public access catalog (OPAC). Some still refer to the online catalog as a "card catalog". [2] Some libraries with OPAC access still have card catalogs on site, but these are now strictly a secondary resource and are seldom ...

5. Punched card - Wikipedia

   en.wikipedia.org/wiki/Punched_card

   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 century, where unit record machines, organized into data processing systems, used ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Edge-notched card - Wikipedia

   en.wikipedia.org/wiki/Edge-notched_card

   A notched card showing two levels of notching. Edge-notched cards or edge-punched cards are a system used to store a small amount of binary or logical data on paper index cards, encoded via the presence or absence of notches in the edges of the cards. [ 1] The notches allow efficient sorting of a large number of cards in a paper-based database ...