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larisa86 [58]
3 years ago
12

Select the characteristics that describe the evolution of computers that predate the personal computer (select all correct answe

rs).
[a] Computers tended to become smaller.[b] Computers tended to become faster.[c] Computers tended to become more expensive.[d] Computers tended to be used for more applications.
Computers and Technology
1 answer:
emmasim [6.3K]3 years ago
5 0

Answer:

Options (a), (b) and (d)

Explanation:

  • Option (a) is true that the computers have become smaller and smaller with advancement of the technology. The earlier version of computers used vacuum tubes and are very big in size.
  • As the years passed and due to the advancement of the transistors the computers have become smaller in size.
  • Option (b) is true. With the advancement in the research in circuits used in the computer like Integrated Circuits the computers have become faster.
  • The response time of the operating system has reduced drastically.
  • Option (c) is wrong option. The computers have become cheaper. The transistors are cheaper compared to the vacuum tubes which are used in the earlier computers.
  • The price of the same computer (memory and time efficiency) has become less in the coming years than in the previous years with the advancement in the research of transistors.
  • Option (d) is true. Now-a-days computers support more and more number of applications. Computers has more number of applications in various and diversified fields.
  • With the advancements in the computers, the computers are finding more applications in different fields like medicine, law, transport industries etc.
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Answer:

#include <iostream>

#include <stack>

#include <queue>

#include <string>

int main()

{

   while ( true )

   {

       std::string letters;

       std::cout << "Please enter a word (Enter - exit): ";

       std::getline( std::cin, letters );

       if ( letters.empty() ) break;

       std::stack<char>

           s( std::stack<char>::container_type( letters.begin(), letters.end() ) );

       std::queue<char>

           q( std::queue<char>::container_type( letters.begin(), letters.end() ) );

       while ( !s.empty() && s.top() == q.front() )

       {

           s.pop();

           q.pop();

       }

if ( s.empty() ) std::cout << "The word is a palindrome" << std::endl;

       else std::cout << "The word is not a palindrome" << std::endl;

   }

   return 0;

}

Explanation:

A <em>stack</em> is used to replicate a stack data structure in C++  while <em>Queue </em>container is a replica of the queue data structure in C++, Unlike stack, in the queue container, there are two ends, i.e. front, and back.

In the code above to be able to use used stack and queue, we included the headers #include <stack> and#include <queue>.

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