- Name one (1) non-programmable machine that was invented
to help humans perform
computations.
- Name one (1) machine that is programmable, i.e.:
the machine can change its programming (= can perform
different variants of a task)
- Give the 4 components in a computer.
- Give the 2 components in a computer system.
- Give an example of a peripheral device that can
perform both input and output operations.
- What is the functiuon of the CPU (Central Processing Unit) ?
- What is the function of the computer memory (RAM) ?
- Where are the instructions of a computer program
stored ?
- Where are the variables of a computer program stored ?
- Which component in the computer system execute the instructions
of a computer program ?
- How is a memory cell in the computer memory (RAM) identified,
i.e.: give the term that computer scientists use to
identify
a memory cell.
- Which bus in the system bus carries (= transmits) the
memory identifying information from the CPU to the memory ?
- Which bus in the system bus is used to transfer
data between the CPU and the memory ?
- Which bus in the system bus contains the
Read/Write signal ?
- Which bus is used by the CPU
to send the value of its Program Counter to the memory ?
- What is a bit ?
- How many bits are in a byte in modern computers ?
- Show all the binary number patterns that 1 bit can store.
- Show all the binary number patterns that 2 bits can store.
- How many different binary number patterns can 1 byte store ?
- Consider the following content of the computer memory:
- Can the bytes at memory location 4000 and 4001 be combined
to make a larger memory unit ?
- If you answer yes to the above question, then:
how many different binary number patterns can the cobined memory unit
store ?
- Can the bytes at memory location 4000 and 4002 be combined
to make a larger memory unit ?
- Can the bytes at memory location 4000, 4001 and 4002 be combined
to make a larger memory unit ?
- Can the bytes at memory location 4001 and 4002 be combined
to make a larger memory unit ?
- What type (kind) of numbers are stored inside a
computer memory ?
- Name the 2 operations that the CPU can perform on the
computer memory.
- If the data bus has 16 wires, how many bytes can the data bus transfer in
one read/write operation ?
- If the address bus has 16 wires, how many bytes maximum can the
memory contain ?
- If the address bus has 34 wires, how many bytes maximum can the
memory contain ?
- For this question, you need to search online for
Morse code
Or you can use this Wikipedia page
The Morse code is a signalling code designed to transmit English text by raido pulses (beeps).
We denote a short pulse as • (dot) and a long pulse as - (dash)
Decode this message in Morse code:
•••• • •-•• •-•• --- Message: - For this question, you need to search online for binary ASCII code
The ASCII code is a binary code to represent the English characters
Decode this message in ASCII code:
01000110 01101001 01110011 01101000 Message: - Suppose you are given the following binary number:
01000001 Corresponding decimal number:What is the decimal number that corresponds to this binary number ?
- Suppose you are given the following binary number:
01000001 Character represented by ASCII code:What is the character that is represented by this binary number ?
- Make a correct English sentence that
starts with:
I isComplete the sentence inside the box. It must be a correct English sentence !
- What is the purpose (in terms of usage) of
the general purpose registers ?
- What 2 kinds of operations can the ALU perform ?
- What is the purpose (in terms of usage) of the
Program Counter (PC) ?
- What is the purpose (in term of usage) of the
Instruction Register (IR) ?
- What is the purpose (in term of usage) of the
Processor Status Register (PSR) ?
- The CPU repeated execute a series of steps to execute an instruction.
What is the term used to describe this series of steps ?
- Which device will the CPU access to obtain the next instruction ?
- How does the CPU prepare itself to get a new (different) instruction
in each execution cycle ?
- Which device inside the CPU will provide the
operands for computer instructions ?
- Which device inside the CPU is used to store the results
of computer instructions ?
-
Suppose the Program Counter contains the value 4000 and
assume that each computer instruction is stored in 1 byte of memory.
- Which instruction code will the CPU fetch from
the memory next ? The answer is a binary number !
- Which register inside the CPU is used to store this
instruction code ?
- Let's call the next instruction that was fetched (= your answer to
the first part of this question):
instruction instrX.
Suppose the instruction instrX updates a general purpose register R0 to 4000.
In this case, which is the next instruction that will be fetched from memory after the CPU finished executing instrX ?
The answer is a binary number !
- Suppose the instruction instrX updates the
Program Counter PC to 4000.
In this case, which is the next instruction that will be fetched from memory after the CPU finished executing instrX ?
The answer is a binary number !
- What is the name of the
program phenomenon exhibited by the
program behavior in the
previous question
(where the Program Counter is updated by 4000) ?
This is a partial content of the computer memory:
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- To request an extension
for hw1, you must
execute the following
command
on a lab machine
before the
deadline of the
homework
(for paper homework, the deadline is the
start time of the class):
/home/cs255001/req-ext hw1 // If you're in section 1 or /home/cs255002/req-ext hw1 // If you're in section 2You request will be successful if you have not exceeded the maximum number of "free" (no-questions-asked) requests allowed