Acer Inc. ( /ˈeɪsər/; Chinese: 宏碁股份有限公司; pinyin: Hóngqi Gǔfèn Yǒuxiàn Gōngsī, lit. Hongqi Corporation) (LSE: ACID, TWSE: 2353) is a Taiwanese multinational hardware and electronics corporation headquartered in Xizhi, New Taipei City, Taiwan. Acer's products include desktop and laptop PCs, tablet computers, servers, storage devices, displays, smartphones and peripherals. It also provides e-business services to businesses, governments and consumers. Acer is the fourth largest PC maker in the world.

In the early 2000s, Acer implemented a new business model, shifting from a manufacturer to a designer, marketer and distributor of products, while performing production processes via contract manufacturers.

In addition to its core business, Acer also owns the largest franchised computer retail chain in Taipei, Taiwan.

Acer was founded by Stan Shih (施振榮), his wife Carolyn Yeh, and a group of five others as Multitech in 1976, headquartered in Hsinchu City, Taiwan.

It began with eleven employees and US$25,000 in capital. Initially, it was primarily a distributor of electronic parts and a consultant in the use of microprocessor technologies. It produced the Micro-Professor MPF-I training kit, then two Apple II clones; the Microprofessor II and III before joining the emerging IBM PC compatible market, and becoming a significant PC manufacturer. The company was renamed Acer in 1987.

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