Most computers have three types of ports: serial, parallel, and USB. A serial port is a type of interface that connects a device to the system unit by transmitting data only one bit at a time. Serial ports usually connect devices that do not require fast data transmission rates, such as a mouse, keyboard, or modem.
Answer: E) The CPU executes the instruction by performing ALU operations.
Explanation: The execution cycle is of three stages namely; fetch, decode and execute. These are the functions that the CPU carries out from the time of boot-up up until it's shut down.
At the fetch stage, the computer retrieves program instructions from its memory register, at the decode stage; the decoders interprets the instructions from the instructions register and then the next stage will be the executions, at this stage; the interpreted instructions are then passed to relevant function units of the CPU to carry out the required instructions.
E.g mathematical and logic functions are passed on the ARITHMETIC AND LOGIC UNIT(ALU) to perform.
Your answer would be a coping saw!
Coping saws are most commonly used cutting woof in design and technology! :)
Answer:
Relational query language is the language that is used in the queries of the relational databases that has rows and columns in table. The user or client presents a request for gaining the information from the database. The relationships in the database are defined in numerous ways which creates the query.
This language can be procedural form or non-procedural form.The operations performed by this language are communication with the relational database, analyzing the relationships between the entities of database,splitting the request from client and then execution of that request is done by database management system(DBMS), etc.
