computermonitors

A computer monitor is an electronic display device that presents visual output from a computer. Modern monitors are typically flat-panel LCDs with LED backlighting, though CRTs are still found in older systems. Monitors connect to a computer via video interfaces and can operate at various resolutions and refresh rates.

Common sizes range from about 19 to 34 inches, with 24 to 27 inches typical for desktops. Aspect ratios are usually 16:9, with ultrawide formats such as 21:9 or 32:9 becoming popular for multitasking and immersive content. Common resolutions include 1080p (1920x1080), 1440p (2560x1440), and 4K (3840x2160). HDR support and wide color gamuts are features on higher-end models, improving contrast and color.

Display panel technologies include twisted nematic (TN), in-plane switching (IPS), and vertical alignment (VA); OLED is a premium option in newer monitors. IPS is valued for color accuracy and viewing angles; TN for response time; VA for contrast. Refresh rates range from 60 Hz to 144 Hz or higher, with higher-end gaming monitors reaching 240 Hz. Response time and input lag influence motion clarity, especially in fast-paced content.

Connectivity typically includes HDMI and DisplayPort; some models add USB-C with power delivery and DP Alt Mode for laptops, plus a USB hub. Ergonomic features such as tilt, swivel, height adjustment, and pivot facilitate comfortable positioning. Calibration tools and factory color accuracy ratings (e.g., Delta E) are relevant for professional work.

In history, monitors evolved from CRT displays to LCDs with LED backlighting and then to higher-resolution, higher-refresh-rate designs. OLED monitors offer true blacks but can be sensitive to burn-in. Modern monitors serve gaming, productivity, content creation, and professional applications, and are often paired with adjustable stands and mounting hardware.