Computers & Software

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Image Formats - Basics

Sunday, May 20th, 2007

    There are a lot of image formats and hundreds of software programmes capable of converting image formats from one to another. Sometimes individual graphic (image) format is native for some graphic application and may be as an export option in another graphic application (or may be not). In that case may arise a need to […]

Flash Drives Versus Other Storage Devices

Sunday, May 20th, 2007

USB Flash Drives vs Floppy Disks
USB Flash Drives are sturdier and offer more storage space in a smaller form factor than traditional floppy disks. Better yet, they require no drive for your computer. Just insert your USB flash drive into a computer’s USB port using a modern operating system and you are ready for working.
USB […]

Flash Drives - Components

Sunday, May 20th, 2007

The device is fitted on one end with a single male type-A USB connector. Inside the plastic casing is a small printed circuit board. Mounted on this board is some simple power circuitry and a small number of surface-mounted integrated circuits (ICs). Typically, one of these ICs provides an interface to the USB port, another […]

Flash Drives - Overview And Characteristics

Saturday, May 19th, 2007

    A small, portable NAND-type flash memory card that plugs into a computer’s USB port and functions as a portable hard drive. USB flash drives are compact and easy-to-use devices that are similar in use to your computer hard drive. Memory capacity typically ranges from 8 megabytes up to 64 gigabytes, limited only by current flash […]

USB - Version History

Saturday, May 19th, 2007

USB Version History
USB logo

USB 1.0 FDR: Released in November 1995.
USB 1.0: Released in January 1996.
USB 1.1: Released in September 1998.
USB 2.0: Released in April 2000. The major feature of this standard was the addition of high-speed mode. This is the current revision.
USB 2.0: Revised in December 2002. Added three speed distinctions to this standard, allowing […]

USB and FireWire

Friday, May 18th, 2007

FireWire
USB was originally seen as a complement to FireWire (IEEE 1394), which was designed as a high-speed serial bus which could efficiently interconnect peripherals such as hard disks, audio interfaces, and video equipment. USB originally operated at a far lower data rate and used much simpler hardware, and was suitable for small peripherals such as […]

Off-Road Navigation with GPS Fugawi Global Navigator 3.3.1(9)

Friday, May 18th, 2007

Off-Road Navigation with GPS Fugawi Global Navigator 3.3.1
(ending)
Documentation
Help is available within the PPC application but is limited to short descriptions of the main features available.
Figure 19: Help function within Global Navigator. A little light, but it covers the basics to get you going.
Better documentation is available in the PC application but there is definitely an […]

USB - Device Classes

Wednesday, May 16th, 2007

Devices that attach to the bus can be full-custom devices requiring a full-custom device driver to be used, or may belong to a device class. These classes define an expected behavior in terms of device and interface descriptors so that the same device driver may be used for any device that claims to be a […]

USB - Power Supply

Wednesday, May 16th, 2007

Standard
The USB specification provides a 5 V (volts) supply on a single wire from which connected USB devices may draw power. The specification provides for no more than 5.25 V and no less than 4.35 V between the +ve and -ve bus power lines.
Initially a device is only allowed to draw 100 mA. It may […]

Off-Road Navigation with GPS Fugawi Global Navigator 3.3.1(8)

Tuesday, May 15th, 2007

Off-Road Navigation with GPS Fugawi Global Navigator 3.3.1
(continuation)
Figure 15: Creating the route by adding existing waypoints.
Global Navigator then creates a route by connecting the waypoints.
Figure 16: A route created from 6 waypoints.
To navigate the route, you select it from the menu and then select ‘Navigate’.
Figure 17: Selecting a route for navigation
Fugawi starts you from the […]

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