The computer brain is a microprocessor<span> called the central processing unit (CPU). The CPU is a chip containing millions of tiny transistors. It's the CPU's job to perform the calculations necessary to make the computer work -- the transistors in the CPU manipulate the data. You can think of a CPU as the decision maker.</span>
Answer:
The answer to this question is given below in the explanation section
Explanation:
First, we need to know what is abstraction and refinement.
Abstraction and refinement are used in application/system development in the field of computing. Abstraction is used to abstract the details from the model. It means that displaying only essential information about the the model and hiding other details. While refinement is the idea that is used in software development by moving through each level of abstraction and incrementally refining each level of abstraction, providing more detail at each increment. Refinement is the inverse of abstraction.
So the correct options to this question are:
- Models may be abstracted and refined depending on the goals of the project.
- Abstraction is a technique used in computational thinking.
- Refinement is the inverse of abstraction.
Answer:
Following are the code to this question:
userVal = input()#defining a variable userVal for input the value
x= 0#defining variable x that holds a value 0
for j in userVal:#defining for loop to count input value in number
if not(j in " .,"):#defining if block that checks there is no spaces,periods,and commas in the value
x += 1#increment the value of x by 1
print(x)#Print x variable value
Output:
Hello, My name is Alex.
17
Explanation:
In the above-given code, a variable "userVal" is defined that uses the input method for input the value from the user end, in the next line, an integer variable "x" is defined, hold value, that is 0, in this variable, we count all values.
- In the next line, for loop is defined that counts string value in number and inside the loop an if block is defined, that uses the not method to remove spaces, periods, and commas from the value and increment the value of x by 1.
- In the last step, the print method is used, which prints the calculated value of the "x" variable.
Answer:
There are three dimensions of information systems ; organizational, management, and technology. Senior management always make decisions, so senior management is required to understand these three dimensions to make better decisions of the business through information systems.
