Numerics and boolean logic (week 4)

Question 1

Do you know how to convert decimal to binary ?

Answer 1

YES

Question 2

Do you know how to convert binary to decimal?

Answer 2

YES

Question 3

Do you know how to convert hexadecimal to decimal ?

Answer 3

YES

Question 4

What is the notation of hexadecimal?

Answer 4

0 x XX or Xh

Question 5

What is the notation of decimal?

Answer 5

.X or Xd

Question 6

What is the notation of binary ?

Answer 6

Bx or Xb

Question 7

How are indicated memory and I/O ports addresses ?

Answer 7

They are indicated using hexadecimal notation

Question 8

What is the method to convert decimal to binary ?

Answer 8

SUCCESSIVE APPROXIMATION METHOD

Question 9

WHAT IS THE METHOD TO CONVERT FROM DECIMAL TO HEXADECIMAL ?

Answer 9

IT’S THE SUCCESSIVE APPROXIMATION METHOD

Question 10

WHAT IS THE METHOD OF CONVERSION FROM BINARY TO HEXADECIMAL ?

Answer 10

it is the grouping digits method

Question 11

What is the method of conversion from hexadecimal to binary ?

Answer 11

splitting digits

Question 12

How to convert fractional decimal numbers into binary ?

Answer 12

successive approximation with N digits from integers and M digits for decimals. Decimals start with 2^-1

Question 13

What are the conventions to represent signed numbers ?

Answer 13

magnitude
1s complement
2s complement

Question 14

SEQUENTIAL LOGIC-What are the applications ? What is switch debouncing ?

Answer 14

1) Switch debouncing
Bouncing object occurs whenever a moving object collides with a stationary one. Switches are no exception to this rule.

• VERY FAST ON/OFF for a short time, until it becomes stationary
  -In digital circuits, the debouncing is seen as additional switching actions (repeated ones and zeros)

Question 15

SEQUENTIAL LOGIC-What are the applications ? What is Clock divider?

Answer 15

SOMETIMES, different devices run on different clock speeds. (while being synchronised). A clock divider generates slower clocks from MASTER CLOCK

Question 16

SEQUENTIAL LOGIC-What are the applications ? What is COUNTER ?

Answer 16

COUNTERS are sequential circuits that counts how many pulses have been applied to their input. Basically it counts how many pulses a sensor has generated.