Each byte in a 16-bit word is divided into which two parts?

In digital systems, a byte typically consists of 8 bits, which can further be divided into two parts known as nibbles. Each nibble consists of 4 bits. Therefore, when considering a 16-bit word, it can be divided into two bytes, and each byte can be further split into its upper and lower nibbles.

The upper nibble consists of the higher four bits of the byte, while the lower nibble contains the lower four bits. This division is particularly useful in various programming and engineering applications because it allows for easier manipulation of smaller segments of data within the byte. Understanding this division is essential for tasks like bit manipulation and representation of hexadecimal values.

The other options do not accurately reflect how a byte is segmented. For instance, blocks and nibbles do not apply in this context, as 'blocks' is not a standard term used to describe byte segmentation. Moreover, digits and symbols misrepresent the components of a byte, which do not classify into those categories. Lastly, stating bytes and bits does not appropriately identify the internal subdivision of a byte itself, but rather refers to the hierarchical structure of digital data as a whole.