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Why do modern machines consist of multiple levels of virtual machines?
Modern machines do not consist of multiple levels of virtual machines; that is a function of the host operating system's virtual machine manager and its guest operating systems, all of which are implemented through software. The operating system's virtual machine manager exposes one or more virtual machines upon which you can host one or more guest operating systems and their applications. In order to execute compiled Java applications upon one of these guest operating systems you will also need to install the Java virtual machine for that specific operating system. Thus you end up with a Java program executing within a Java virtual machine executing within a virtual machine executing within a virtual machine manager executing upon the physical hardware. The physical hardware itself may be optimised to handle virtual machine managers more efficiently, but the virtual machine manager is a software program; it is not part of the physical machine architecture
Why you need interrupt?
An interrupt is a signal from a device attached to a computer or from a program within the computer that causes the CPU to stop executing the current program and figure out what to do next. It enable input/output device communicate or get the attention of the processor, and execute a program that need more attention.
How does a multiple tape Turing machine differ from a single tape Turing machine in terms of computational power and efficiency?
A multiple tape Turing machine has more than one tape, allowing it to perform multiple operations simultaneously. This gives it more computational power and efficiency compared to a single tape Turing machine, which can only perform one operation at a time.
Why were machine guns more destructive than single shot guns?
They are not- but they have a higher chance of hitting their target.
How does a multitape Turing machine differ from a single-tape Turing machine in terms of computational power and efficiency?
A multitape Turing machine has multiple tapes for input and output, allowing it to process information more efficiently than a single-tape Turing machine. This increased computational power enables multitape machines to solve certain problems faster and with less effort compared to single-tape machines.
What is a single license?
A single license is a type of copyright that restricts the use of the program to one computer, or one server. this means that the program cannot be installed for free on different computers. single license is used for more important programs like Microsoft office and Macromedia software.
What is example of fetch and execute cycle?
When a typical microcomputer has finished executing a program control is transferred to another program which flashes the cursor on the screen and checks the keyboard if any keys were pressed In some processors an insruction may take up more than one storage location
What are the differences between a dual pulley row machine and a single pulley row machine in terms of effectiveness and muscle engagement?
A dual pulley row machine allows for more independent movement of each arm, providing a more balanced workout for both sides of the body. This can lead to better muscle engagement and overall effectiveness compared to a single pulley row machine, which may not offer the same level of symmetry in muscle development.
How does a compound machine make work easier?
A compound machine combines two or more simple machines to perform work more efficiently than a single simple machine. By leveraging the advantages of different simple machines working together, a compound machine can multiply the input force or distance, making it easier to accomplish tasks that would be challenging using just one simple machine.
What is source code c?
"Source code", in a programming language, refers to the original program, as written by a programmer (and more or less readable by humans); the version of the program before it is converted into machine language by the compiler.
Advantages and disadvantages of microcode and machine language?
Microcode allows for easier implementation of complex instructions but can introduce additional overhead. Machine language directly corresponds to the hardware for faster execution but is more challenging to program and understand.
Describe how you could obtain a statistical profile of the amount of time spent by a program executing different sections of its code?
One could issue periodic timer interrupts and monitor what instructions or what sections of code are currently executing when the interrupts are delivered. A statistical profile of which pieces of code were active should be consistent with the time spent by the program in different sections of its code. Once such a statistical profile has been obtained, the programmer could optimize those sections of code that are consuming more of the CPU resources.
