Answer: Steve Jobs made several contributions towards technology by introducing the range of Apple devices and technologies .he started the Apple Incorporation.The technologies introduced by his company are as follows:-
- iPod
- iPhone
- Apple Lisa
- iMac
- iPad etc.
Bill Gates is the founder of Microsoft incorporation and made a lot of development in that field to create various software for the operating system.the creation of "Microsoft Window" was started by him and some other contributions are as follows:
- Windows 7
- Windows 8
- Vista
- XP
- windows 95 etc.
Answer:
They create categories for data.
Explanation:
They can create categories for data, by storing the data. Information itself can be stored in multiple ways, like creating categories!
I hope this helped :)
Answer:
the user cannot use a computer system without hardware and software
Answer:
#here is code in python.
# read the food bill
tot_bill=float(input("Please enter the food bill:"))
# tax on food
tax=0.06
#choice for tip by user
choice=int(input("enter your choice for tip:(1 for 15%, 2 for 18% and 3 for 20% :)"))
// calculate the total food bill
if choice==1:
tot_food_bill=tot_bill+tot_bill*tax+tot_bill*(.15)
elif choice==2:
tot_food_bill=tot_bill+tot_bill*tax+tot_bill*(.18)
elif choice==3:
tot_food_bill=tot_bill+tot_bill*tax+tot_bill*(.2)
else:
print("invalid choice:")
#print the total food bill
print("total food bill is ",tot_food_bill)
Explanation:
Read the food bill from user and assign it to variable "tot_bill".Initialize the tax=0.06 (i.e. 6%) on the bill.Then ask user to give his choice for tip. if the choice is 1 then tip will be 15%, if 2 then 18% and if choice is 3 Then tip will be 20% of the bill.Calculate the total food bill and assign it to variable "tot_food_bill".
Output:
Please enter the food bill:100
enter your choice for tip:(1 for 15%, 2 for 18% and 3 for 20% :)2
total food bill is 124.0
B, Parallel ports are faster than serial ports.
A parallel port can move a set of 8 bits at a time on eight different wires, it uses a 25 pin connector, called a DB-25 connector, whereas a serial port only has a DB-9 connector.
