Computer-related introductions in 2009

A blockchain is a distributed ledger with growing lists of records (blocks) that are securely linked together via cryptographic hashes. Each block contains a cryptographic hash of the previous block, a timestamp, and transaction data (generally represented as a Merkle tree, where data nodes are represented by leaves). Since each block contains information about the previous block, they effectively form a chain (viz. linked list data structure), with each additional block linking to the ones before it. Consequently, blockchain transactions are resistant to alteration because, once recorded, the

group of smartphone models produced by Apple Inc.

series of Android smartphones, mobile computing device and Android applications

computer hardware interface

Apple mouse introduced in 2009

open inductive charging interface standard developed by the Wireless Power Consortium

WikiReader was a project to deliver an offline, text-only version of Wikipedia on a mobile device. The project was sponsored by Openmoko and made by Pandigital, and its source code has been released.

file format for fonts in web pages

family of central processing unit models

cellphone

series of video cards

software suite

2009 portable media player by Microsoft

PhotoDNA is a proprietary image-identification and content filtering technology widely used by online service providers. Although the design of the algorithm has never been publicly disclosed, a leaked software library that implements it became accessible through a repository on GitHub in 2021.

series of GPUs by Nvidia

series of GPUs

netbook

interactive album artwork format by Apple

The SheevaPlug is a "plug computer" designed to allow standard computing features in as small a space as possible. It was a small embedded Linux ARM computer without a display which can be considered an early predecessor to the subsequent Raspberry Pi series of computers.

thumb|A Mobile-ITX CPU module with an IO-board Mobile-ITX is the smallest (by 2009) x86 compliant motherboard form factor presented by VIA Technologies in December, 2009. The motherboard size (CPU module) is . There are no computer ports on the CPU module and it is necessary to use an I/O carrier board. The design is intended for medical, transportation and military embedded markets.

laptop line manufactured by Hewlett-Packard