Notes, summaries, assignments, exams, and problems for Computer science

The application of several binary codes in microprocessor technique

Nbà + integer arithmetic, table/matrix indexing, event counting., C2à integer arithmetic, exponents in floating point notation.,Bcdà Faults:not effetive use of binary Word, absence of sign., Grayà code disksor bars to control position of moving elements., AScià Communication(text), service of: mosaic display, printers, autonomous keyboards.

Neuman:

It has a single storage system, Processor needs two clocks cycles. Dont use pipeline, Only one bus is used for both data transfers, older

Harvards:

It has two separated memories, 1 cycle if appropiate pipeling strategies, It has separate data and instruction busses, modern

Enumerate the phases of processor instruction execution.

Instruction...

Inserting Tables into Slides

In the Insert Object dialog box, click the Create From File option and click Browse to locate and choose the document or spreadsheet that contains the table. By default, the presentation software will insert the table. When you click OK, the entire document or spreadsheet is imported to your slide. Double-click the inserted text to remove extra text if the document contains more than the table. If you check the Link checkbox while inserting, after you update the table in the document or spreadsheet, then right click on the imported table in the presentation software, and select the option Update Link, the embedded table gets updated automatically. Drag and drop the table on the slide to position it.

Chart Design Principles

Convey...

Computer Hardware

Core Components

CPU (Central Processing Unit)

The CPU controls and executes operations within the computer to process information. It consists of:

• CU (Control Unit): Coordinates all computer activities and manages temporary data storage.
• ALU (Arithmetic and Logic Unit): Performs basic data operations.

Memory

• Random Access Memory (RAM): Enables reading and writing operations, allowing access to random memory locations.
• Read Only Memory (ROM): Contains permanent instructions for computer startup, forming the BIOS (Basic Input Output System).

Input/Output Units

These units facilitate communication between the CPU, internal components, and external devices.

Buses

Buses enable efficient information exchange between computer components. Types...

Gantt Chart: A Project Planning and Control Method

A Gantt chart is a graphical method of planning and control in which a project is divided into different activities, and estimates are made about how long each activity takes. This chart shows the timing relationships between events of a program and was developed by Henry L. Gantt. Gantt charts are useful for monitoring relatively small projects.

Understanding Key Concepts

• Task: Project activities are carried out in a particular sequence.
  • Predecessor Task: A task that must start or finish before another can begin.
  • Successor Task: A task that depends on the start or finish of a preceding task.
  • Summary Tasks: These are made up of subtasks and summarize those subtasks.
• Milestones: A task without duration

CPU Internal Registers

Internal registers are a set of temporary storage units available to the Central Processing Unit (CPU) for its operation. They serve as high-speed storage locations within the CPU itself.

The size of these registers depends on the function to be performed and the type of CPU. They generally match the size of the Data Bus or the Address Bus.

Classification of CPU Registers

CPU registers are broadly classified into two main types:

• Inaccessible Registers: Not directly controllable by the user.
• Accessible Registers: Controllable by the user.

Inaccessible Registers

Inaccessible registers are those whose operation or content the user cannot directly control. They are for the exclusive and restricted use of the CPU. From the user's...

The Windows Control Panel: Your System's Command Center

The Windows Control Panel is your primary tool for configuring both the software and hardware installed on your computer. It organizes utilities into categories for easy access. Here's a breakdown of some key configuration options:

Add Hardware Wizard

This wizard guides you through installing new devices. Typically, you'll need the installation CD provided by the device manufacturer.

Add/Remove Programs (Programs and Features)

This section displays all programs installed on your computer. Select a program to uninstall it. To install a new program, run the installer file. To add or remove Windows features, click on "Turn Windows features on or off."

Network Connections (Network and Sharing Center)

Creating Engaging Multimedia Presentations

A presentation is a multimedia file that can contain text, graphics, photos, music, and video. Its organization is done by slides, which succeed one another under your control. Templates are presentations that have predefined design objects in the slides, such as the background, fonts, placement of text, and other objects that give the presentation a common appearance across all slides.

Interactivity: Establishing Hyperlinks

Interactivity is established by creating hyperlinks. Clicking on a button or text performs an action, such as opening a file or linking to a website. You can insert a hyperlink from the Insert menu, then selecting Hyperlink.

Interactivity in objects allows navigation to different slides...

Common Features of IPC Light Mechanisms

These mechanisms are implemented as a unit and share common features, including:

• All mechanisms have a table whose entries describe their usage. Each table entry has a numerical key chosen by the user.
• Each mechanism has a 'get' call to create a new entry or retrieve an existing one. The parameters of this call include a key and a mask of flags. The kernel searches the table for an entry that matches the provided key.
• If the key is set to IPC_PRIVATE, the kernel occupies the first free entry. Subsequent calls will return this entry until it is released.
• If the IPC_CREAT flag is active in the mask, the kernel creates a new entry if there is no match for the provided key. If both IPC_CREAT and IPC_EXCL flags

The Open Systems Interconnection Model

The Open Systems Interconnection (OSI) model is an abstract, layered representation created as a reference for network protocol design. The OSI model divides the process of networking into different logical layers, each of which has unique functionality and to which specific services and protocols are assigned.

Application Layer

The application layer, the seventh layer, is the top layer of both the OSI and TCP/IP models.

Presentation Layer

The presentation layer has three main functions:

• Coding and data conversion of the application layer to ensure that data from the source device can be interpreted by the appropriate application on the target device.
• Compression of the data in a way that can be decompressed

SPC Control System

SPC Control System refers to the method of controlling a switching system.

• Centralized SPC Control: If a given processor has direct access to all resources of the node and performs all system functions. This usually means the node has a single central computer (doubled for security).
• Distributed SPC Control: If a processor is in a given state but does not have access to some of the resources and/or is not able to run only some of the functions of the system. In practice, this leads to an existing digital system with a high number of microprocessors that perform the control node as a whole.

Functions of Switching Systems

Switching systems provide power and signaling with user terminals. The user, via the wire pair of the switching...