CD-ROM, DVD, and Flash Memory Storage Technologies
CD-ROM
Emergence and Evolution of the CD-ROM
The CD technology was a creation of Philips and Sony. In the middle of the decade, the first computer CD drive units were introduced. These units used the same physical format, the CD, but they could contain not only recorded music but also data and computer programs.
- CD-R: This is a recordable CD; however, there is no possibility to delete and start again to record information.
- CD-RW: This CD can erase and rewrite many times as desired.
The Operation of CD
Read MoreIndustrial Robots: Components, Operation, and Programming
Industrial Robots
An industrial robot is defined as an automatically reprogrammable, multifunctional material handler with three or more axes. It can be positioned and used to orient material, parts, tools, or special devices to perform work in various stages of industrial production, either in a fixed position or while moving. (IFR, ISO / TR 83,737, 1988)
Degrees of Freedom (DOF)
Each of the independent movements that each joint can make with respect to the previous one.
- 3 DOF – is the minimum (as
Engine Components and Timing Systems: Maintenance and Repair
ITEM 9: Engine Components
Flywheel
The flywheel is the part that stores kinetic energy of the working careers or dies and gives non-motor racing. It is also responsible for regulating the operation of motor rotation.
- Its size depends on the number of cylinders, and the greater the number of cylinders, the lower the irregularity of rotation.
Process control:
- Reduces engine vibrations.
- A certain number of revolutions in the car shake when you release the clutch: incorrect link starter pinion to the crown.
Semiconductor Fundamentals: Intrinsic, N-Type, and P-Type
Semiconductor Fundamentals
A semiconductor is a material element whose electrical conductivity lies between that of an insulator and a conductor.
The best-known semiconductors are silicon (Si) and germanium (Ge). Because the behavior of silicon is more stable than germanium against external factors that can alter its normal response, silicon (Si) is the most commonly used semiconductor element in the manufacture of solid-state electronic components. We will generally refer to silicon, keeping in mind
Read MoreMachine Tools and Metalworking Processes: A Comprehensive Look
Filer (Roughing and Finishing of Parts)
A machine tool is characterized by the cutting motion it has. The tool has the advance and penetration of making the piece. The machine consists of a base casting that houses the drive system coupled to an oscillating crank mechanism with a fixed and a hinged fulcrum. This provides reciprocating linear motion to a sliding carriage, called a ram, in which the tool is fixed. The length of the advance stroke of the ram can be adjusted by varying the length of
Read MoreMemory Management in Computer Systems: An In-Depth Look
Memory Management Requirements
a) Relocation: The ability to place a process in a different area of memory once it has been reloaded for execution.
b) Protection: Must be able to avoid interference (accidental or intentional) between processes so that a process cannot refer to memory locations occupied by another.
c) Behavior: When multiple processes need to access the same memory, memory management must be able to allow this access without compromising the protection discussed in paragraph b).
d) Logical
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