A printer connected directly to a personal computer typically uses which type of connection?

A printer connected directly to a personal computer typically uses a USB or parallel Centronics connection due to their design and functionality. USB (Universal Serial Bus) is the most common and modern connection type used for printers. It allows for fast data transfer, simplified connections without requiring configuration, and support for various peripherals in a daisy chain.

Parallel Centronics, while less common in contemporary setups, was historically widespread for connecting printers to computers, particularly in environments where older technology was prevalent. It operates by transferring multiple bits of data simultaneously, which can improve printing speeds on printers that utilize this interface.

In contrast, RS-232 is largely an older serial communication standard often used for point-to-point connections but is not typically employed for modern printer connections. Ethernet is primarily used for networking multiple devices over a local area network and is not suited for direct connections between a single printer and a personal computer unless specified for networked inkjet or laser printers. Similarly, Wi-Fi allows for wireless connections often used in networked printers and mobile printing solutions, but it does not apply to direct connections as is the case here.