12 Questions
Which unit in a basic computer is described as '4096 x 16' in the text?
Memory unit
Which component in a basic computer is responsible for controlling the register and memory?
Control logic gates
What is the purpose of the 'OUTR' register in a basic computer?
To store output characters
Which instruction will skip the next instruction if the 'FGO' flag is set to 1?
SKO
What does the 'ION' instruction do in a basic computer?
Enable interrupts
What does the 'RR' instruction do when executed in a basic computer?
Read data from memory
Which control inputs are associated with the registers in the given text?
LD, INR, CLR
What provides the data inputs for the register in the described system?
Adder and logic circuit
How many sets of inputs does the adder and logic circuit have in the system?
3
Which operation is performed by D0T5 in the system?
$AC \leftarrow AC \land DR$ (AND with DR)
What does the gate structure control in relation to the AC register?
LD, INR, CLR inputs
What type of arrangement is commonly used to connect I/O devices to CPU & Memory in modern computers?
Single bus arrangement
Study Notes
Computer Architecture
- The Memory Address Register (MAR) is described as '4096 x 16'.
- The Control Unit is responsible for controlling the register and memory.
Registers
- The 'OUTR' register is used to output data from the computer.
- The 'FGO' flag is used for conditional jumps, and if set to 1, the next instruction will be skipped.
Instructions
- 'ION' instruction is used to initialize the Output Register (OUTR).
- 'RR' instruction is used to rotate the contents of the Accumulator Register (AC) right.
Register Control
- Control inputs associated with registers include Load, Count, and Clock.
- The data inputs for the register come from the Output of the Adder and Logic Circuit.
Adder and Logic Circuit
- The Adder and Logic Circuit has two sets of inputs.
- D0T5 performs the OR operation in the system.
Gate Structure
- The gate structure controls the loading of data into the AC register.
Input/Output Devices
- In modern computers, I/O devices are commonly connected to the CPU and Memory using a bus arrangement.
Test your knowledge on the design of a basic computer architecture, including memory units, registers, flip-flops, decoders, common bus, control logic gates, and adder logic circuits. Explore concepts like opcode decoding, timing decoding, input/output operations, and control signals.
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