what are the similarities and differences for?

Question

a. mouse and touch screen
b. hard copy and soft copy
c. file name and path name
d. library catalouges and directories

Answer 1

a.
Mouse is an input device expressly. A touch screen is an input AND output device.

b.
The hard copy is a permanent reproduction, on any media suitable for direct use by a person (e.g. a printed sheet)
A soft copy is essentially the unprinted digital document file.

c.
The file name is the unique identifier of a file (the file can be anywhere - e.g. calc.exe). The path name is the file name completed with its place in the directory structure (e.g. C:\Windows\system32\calc.exe on Windows or /etc/init.d/network on Linux).

d.
(I guess you think for Internet libraries.) This is a hierarchical organized index where the entries are links to their content. The directories are entities in a file system which contains a group of files and/or other directories.