Pressing the mouse on a menu bar item makes its pull-down menu appear. Memory - Also called main memory. The working space used by the computer to hold the program that is currently running, along with the data it needs, and to run programs and process data. The main memory is built from RAM chips. The amount of memory available determines the size of programs that can be run, and whether more than one program can be run at once.
Main memory is temporary, and is lost when the computer is turned off.
Memory runs about 100 times faster than hard disk storage. Message Thread - A group of Internet Forum or BBS messages and replies linked and sorted by topic. Metasearch - A regular search engine allows a user to search a single database. A meta-searcher is a front end that passes each query to multiple search engines. It makes use of CRC and retransmission of defective blocks by checking performed within the modem.