∗ If → stands for 'addition', ← stands for 'subtraction', - stands for 'division', stands for 'multiplication', stands for 'equal to', then which one is correct?
A2 4 ← 6 → 2 6
B5 → 7 ← 4 - 2 4
C3 6 - 2 → 3 ← 6 6
D7 ← 4 → 3 - 6 1 4
Read the given conversion between Peterson and Jackson. They are discussing about boot loader. Select whose statements are correct. Peterson: A computer's central processor can only execute program code found in ROM and RAM. Modern OS and application program code and data are stored on non volatile data storage devices, such as hard disk drives, CD, etc. Jackson: When a computer is first powered on, it does not have an operating system in ROM and RAM. The computer must initially execute a small program stored in ROM along with the bare minimum of data needed to access the non volatile devices from which the operating system programs and data are loaded into RAM. Who is correct: Peterson or Jackson
In 2nd generation computers the vacuum tubes was replaced by some other device that made them more effective. What is the device?