National 5 Computing - Computer Systems

Convert the following 8‑bit binary number into denary.

1110 0010

• 11

• 226

• 177

• 142

• 213

Match the parts

• Control Unit

• Transfers data between the processor and memory and vice

  versa.

• The Address Bus

• Performs all the

  calculations (e.g. + - / *) and Logical operations (e.g.

  AND, OR).

• The Data Bus

• Identifies the memory location that is going to be

  accessed.

• Registers

• Controls the sequencing of fetching,

  decoding and execution of instructions.

• ALU

• Temporary memory locations within the

  processor itself.

• Mantissa - 34321

  Exponent - 10

• Mantissa - 34321

  Exponent - 5

• Mantissa - 0.34321

  Exponent - 5

• Mantissa - 5

  Exponent - 34321

131

The above denary number in binary is...

• 00010010

• 00110011

• 10000001

• 1000 0011

Vector images are stored in the computer as a collection of (a)   and

An example of two types of vector object are...

• Ellipse

• Square

• Polygon

• Pentagon

The ____ ______ attribute of this vector object is set to red.

(a)  

A bit-mapped graphic is stored as a 2-dimensional array of (a)   stored as a binary value.

Animal

State the number of bits required to store this word using extended ASCII

(a)  

A spelling game stores 20 words. Each word has an accompanying sound file where an actor’s voice speaks the word.

State where in the computer system the 20 words will be stored while the program is running.

(a)