Moduel 9 Flashcards
What is the Address Bus?
A bus that connect the CPU to memory.
What is Data Bus?
Wires that carry actual electronic data used by the CPU and the various devices in the computer.
What the Control Bus does?
Allow the CPU to control devices and receive the result of the commands.
What is a Netwok card?
A physical card that permits a computer to connect to a network.
What is a Pin?
A thin piece of metal used to connect parts in a computer.
Ex: the pins of the CPU.
What is the Port Address.
A unique identifier for a non-physical port on a computer.
What is the 6502?
A microprocessor introduced in 1975.
What is a microprocessor?
A device containing a CPU and all the parts it needs to work (including registers).
What is AMD?
Advanced Micro Devices.
Computer company founded in 1964 that makes computer parts like CPU and microprocessors.
What was the first computer that Apple sold to the public?
Apple 2.
What is the Character Code?
A system where the various numbers, letters, etc of a language are each represented by a unique code.
Ex: the character “A” is represented by the number 65, i.e 1000001.
What is the Clock?
- device, timing, cycle signal.
The clock is the device in the computer that controls the timing of the CPU. It syncronizes the computer.
It is a device that, once turned on, continuously operates to produce an exact electronic output signal.
This signal increases and decreases in electrical strength at an exact, unchanging rate.
At each cycle of this signal, an instruction can be performed.
What is Hertz?
Its how many times a vibranting electronic signal vibrates in one second.
Is the measure of cycles per second in a electrical signal.
How the speed of the clock of a computer is measured?
In Hertz. To say that a computer has 3.5hz speed is the same to say that its clock signal has 3.5 billions cycles per second. So the computer can perform 3.5 billions instructions per second.
Giga means?
Billion.
What is an Intermediary?
Machines that connect two other things so they can communicate.
What is a volt?
A unit of force, or the potential to perform work, for an electrical current.
What is a voltage?
Electric pressure, or potential difference, is the difference in electric potential between two points
Ligthing a buld and powering a car-crashing machine demans different amount of work and voltage.
What means to say that a data has a boolean type?
That its value is only true or false, 1 or 0 etc.
What is a simulation?
An artificially-created version of something that represents the actual thing.
____ means to make it digital.
Digitize.
What is the problem with Digitizing?
It can never perfectly convert an analog data to digital data. Some data is always lost on the process.
How a half adder circuit works?
By combining a XOR gate to an AND gate.
The XOR gate outputs the sum and the AND gate outputs the carry.
How a full adder circuit works?
The circuit receive three inputs. Two are new inputs and one is a carry of a previous sum.
The sum part is composed of two XOR gates connected in sequence. The first XOR gate receives the two new inputs. The second XOR gate receives the output of the first XOR gate and the carry. The ouput of the second XOR gate is the sum of the final result.
The carry part is composed of two AND gates and one OR gate.
The first AND gate inputs are the output of the first XOR gate and the carry.
The second AND gate inputs are the new two inputs.
The OR inputs are the outputs of each AND gate and the output of the OR gate is the carry of the final result.
