The key difference between vector and raster monitors lies in how they display images. A raster monitor displays images by drawing a grid of pixels (picture elements). Each pixel is a small square of color, and the monitor rapidly scans these pixels to create the image we see. The image is constructed from these individual pixels. This method is suitable for displaying photographs and detailed images.

A vector monitor, on the other hand, displays images using mathematical equations that define lines, curves, and shapes. Instead of pixels, it uses vectors to represent the image. The monitor calculates the path of these vectors and draws them on the screen. This results in images that are sharp and clear, regardless of how much they are magnified. Vector graphics are often used for logos and illustrations because they scale without losing quality.

RAM (Random Access Memory) is a type of volatile memory used for storing data that the computer is actively using. 'Volatile' means that the data stored in RAM is lost when the power is turned off. RAM allows the computer to quickly access any stored data, hence the term 'random access'. It's used to hold the operating system, applications, and data currently being processed. The amount of RAM significantly impacts the computer's performance; more RAM generally allows for smoother multitasking and faster application loading.

ROM (Read-Only Memory) is a type of non-volatile memory. 'Non-volatile' means that the data stored in ROM is retained even when the power is turned off. ROM typically contains firmware, which are essential instructions for the computer to start up (e.g., the BIOS). Data in ROM is usually written during the manufacturing process and cannot be easily changed by the user. ROM is used for permanent, essential instructions that the computer needs to function.

Here's a table summarizing the key differences:

ROM (Read-Only Memory) stores data permanently, meaning the data cannot be easily altered or erased. It's typically used to store the computer's boot instructions (BIOS) and firmware – essential instructions needed to start the computer. Data is read from ROM, but not easily written to.

RAM (Random-Access Memory) is volatile memory, meaning data is stored temporarily and is lost when the power is turned off. It's used for actively running programs and data that the computer is currently using. RAM allows for fast reading and writing of data, enabling quick access to information.

Here's a summary:

• ROM: Permanent storage, read-only, used for boot instructions and firmware.
• RAM: Temporary storage, volatile, used for running programs and active data.