Remote Control System for Elevators and Calculators
Remote Control: RMI Implementation
Package: customer java.rmi
Import java.rmi.*;
Import java.util.Scanner;
Import interfaz.GestorAscensores;
Import java.lang.Math
Public class Remote {
GestorAscensores manager;
Scanner keyboard = new Scanner(System.in);
Public Remotecontrol() throws Exception {
handle = ((GestorAscensores) Naming.lookup(“rmi://localhost/Manager“));
}
Public void check() throws Exception {
Scanner keyboard = new Scanner(System.in);
int option, pisodest, id;
do {
choice = menu();
switch (option) {
Read MoreBusiness Documents and File Management
Types of Business Documents
Sales/Purchase Documents
- Offer
- Order
- Contract
- Statement
- Bill of Lading
- Invoice
- Proforma Invoice
- Receipt
- Bills
- Notes
- Check
General Documents
- Internal Communications
- Reports
- Minutes
- Announcements
- Memos
- Resource Instance
- Officiates
- Affidavit
- Certificate
Internal Communications
Notices and internal communications share common characteristics:
- Short and informal
- No specific protocol
- Dated and signed
Reports
Generally prepared by specialists in a third-person, impersonal style, using specialized language
Read MoreChrominance, Sync & Deflection Circuits in Video Monitors
6.13 Chrominance Process:
To start, the signal is given by the video control block. This signal goes through a 4.43 MHz bandpass filter, which removes luminance and sync components. The filter output will only signal corresponding to the color information of the image.
Once extracted, the chroma information is taken to the chroma control block, which controls the signal’s amplitude, resulting in varying saturation.
The PAL demodulator consists of a 64 microsecond delay line, an adder, and a subtracter.
Read MoreExpert Systems: Components, Advantages, and Reengineering
1. Force of Expert Systems
Diagnosis: Obtaining a ruling from observable characteristics (symptoms, sensors, etc.).
Prediction: Deducing possible consequences from a given situation.
Interpretation: Converting information from physical sensors into a logical description.
Planning: Developing a sequence of actions to be implemented in a particular temporal order.
Monitoring: Contrasting solutions from an expert system with planned withdrawals.
Education: Diagnosing, treating, and repairing the behavior
Read MorePeripheral Devices: Types, Interfaces, and Classifications
Peripheral Devices
1. Types of Peripherals
One of the main functions of an operating system is to control the computer’s peripheral input/output. The operating system sends commands, determines which device needs the processor’s attention, and eliminates potential errors. Peripherals, which manage information, are classified as follows:
- Block Peripherals: These handle information in fixed-size blocks, transferring data to and from memory in block form.
- Character Peripherals: These input data as individual
Introduction to Computer Architecture
Direct Memory Access (DMA)
Direct Memory Access (DMA) is a feature of computer systems that allows hardware components to access the main memory (RAM) directly, without involving the CPU for every data transfer operation. This mechanism is crucial for efficient data handling, particularly in high-speed devices like hard drives, network cards, or graphics cards, where frequent data transfer is required.
Basic Concept of DMA
In a typical data transfer operation without DMA, the CPU manages every read
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