Reading Journal 8 - Shadowsarespooky/TechJournal GitHub Wiki

Reading: Difference between Serial and Parallel Transmission

There are two methods of transmission of data, Serial and Parallel. In Serial Transmission, data-bits go from one computer to another in a bi-direction. One bit flows at one clock pulse. Within Parallel Transmission many bits are transmitted simultaneously from one computer to another. Parallel is used for short distance. Serial Transmission is slow in comparison, but it can be used for long distance. Parallel is fast but should really be used for short distance.

Data Transmission – Parallel vs Serial

The two methods are used to transmission data between multiple digital devices. The pros of Parallel Transmission is that it's easier to program and that it sends data faster. However, it needs more transmission channels, and data bits can be out of sync. An example of that is when there is distortion or lag in a video call. Parallel is used when a large amount of data is being sent quickly. Video streaming uses parallel transmission as it is transmitting bits in large amounts quickly.

Pick an I/O device (keyboard, scanner, USB thumb drive, etc.). Describe what I/O control method would be best for the device, and whether it should use character or block I/O.

The I/O method I think a keyboard would be best is Parallel as its a short distance, it can handle large amounts of bits, and It's faster. It would use character I/O.

Based on the "Difference between Serial and Parallel Transmission" table in the web link, give an example of an I/O scenario where serial transmission would be better than parallel transmission. Justify your answer.

I think Serial transmission would work better for a mouse's I/O. As it takes in one input at a time, it better to expect single bits instead of many at once.