Explanation

Old computers those from the 1940s and 1950s, were based on vacuum tubes

Vacuum tubes were used in early computers to amplify electrical signals and act as switches.

They could control the flow of electricity in a circuit,

Making it possible to perform calculations and process information

Explanation

The C programming language is widely known for its use in system and structured programming.

It provides:

• low-level access to memory
• a simple set of keywords
• a clean style

That makes it highly efficient and suitable for writing operating systems and other system-level software.

Explanation

The governor is often regarded as the chief administrator of a state

Responsible for overseeing the execution of state laws and the administration of state government.

Explanation

The HTML code <input type="checkbox"> is used to create a checkbox input field. This allows users to select or deselect options by checking or unchecking the box.

Explanation

 In C++, when you use a statement like StructName var;,

it tells the compiler to allocate memory for an instance of the structure StructName.

Explanation

The relationship between "agreement" and "dissent" is one of opposition, where "dissent" is the opposite of "agreement."

Similarly, "approval" is the opposite of "rejection," showing a similar contrasting relationship.