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zhuklara [117]
3 years ago
8

Queremos conectar una pila de 4,5 V a un diodo LED cuya tensión de trabajo es de 2 V. Calcula cuál debe ser el valor de la resis

tencia introducida en el circuito para que la intensidad no exceda de 20 mA.
Computers and Technology
1 answer:
Dovator [93]3 years ago
3 0

Answer:

No hablo español

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ANTONII [103]

Answer:

Pie chart

Explanation:

Just get to know

7 0
2 years ago
Create a class Str that subclasses str. Add a method to the subclass that checks if the string does not start with a given strin
Stolb23 [73]

Answer:

#include <iostream>

using namespace std;

class Str{  ///baseclass

   public :

   string super_str;

   string getStr()

   {

       return super_str;

   }

   void setStr(string String)

   {

       super_str=String;

   }

};

class str : public Str{   //inheriting Str publicly

   public :

       string sub_str;

       string getstr()

       {

           return sub_str;

       }

       void setstr(string String)

       {

           sub_str=String;

       }

       bool notstartswith()

       {

           int n=sub_str.length();   //to find length of substr

           bool flag=false;

           for(int i=0;i<n;i++)     //Loop to check beginning of Str

           {

               if(super_str[i]!=sub_str[i])

               {

                   flag=true;

                   break;

               }

           }

           return flag;

       }

};

int main()

{

   str s;    //object of subclass

   s.setStr("Helloworld");  

   s.setstr("Hey");

   if(s.notstartswith()==1)     //checking if str is substring of Str

       cout<<"Str does not start with str";

   else

       cout<<"Str starts with str";

   return 0;

}

OUTPUT :

Str does not start with str

Explanation:

Above program is implemented the way as mentioned. for loop is being used to check the beginning of the str starts with substring or not.

3 0
3 years ago
Explain why regular system cleanup is vital to ensuring the operating system runs efficiently.
Oksanka [162]
Cleaning up a system helps clear up the space on the drives. It may also clear up processor usage, ram usage if you uninstall programs that automatically started when the system booted. You may also delete some unwanted programs in the process.
5 0
3 years ago
Can Sombody please help me with this question, I'm struggling!
hjlf

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Explanation:

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3 years ago
A cell that a user is typing words or numbers into is called the ________  cell.
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Cell content or Content value
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