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Class Notes for Mechanical Engineering at York University

MECH 2301 Lecture Notes - Lecture 35: Hard Disk Drive Performance Characteristics, Bit Manipulation, Linked List
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MECH 2301 Lecture 35 Notes Introduction Linked list method A bitmap is usually kept in memory for fast access. The bitmap method is an economical way of keeping track of free space Since only one b...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 36: Sequential Access, Random Access
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MECH 2301 Lecture 36 Notes Introduction Tape Allocation The blocks in a linked free space list are stored in the order in which files are deleted. Since deleted files are placed at the end of the list, th...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 38: Disk Controller, Computer File
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MECH 2301 Lecture 38 Notes Introduction Paper Filed Alphabetically You might choose to create a single file system with the papers filed alphabetically by title. Or, you might create a number of f...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 37: System Administrator
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MECH 2301 Lecture 37 Notes Introduction File systems, volumes, disks, partitions, and storage pools Consistent with other file directory systems There are also extensions that make it possible to store a ...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 34: Free Space Bitmap, Bitstream, Security Descriptor
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MECH 2301 Lecture 34 Notes Introduction Bitmap method An attribute is a stream of bytes that describes some aspect of the file. Standard attributes include the file name, its security descriptor, time sta...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 40: Disk Partitioning, System Administrator
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MECH 2301 Lecture 40 Notes Introduction MS-DOS Particularly MS-DOS and early versions of Windows were barely adequate to handle numbers large enough to address all of the blocks on the small disks of the...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 39: Disk Partitioning, Booting, Ntfs
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MECH 2301 Lecture 39 Notes Introduction Primary and Extended Partitions The partitions themselves can be further divided conceptually into primary and extended partitions. Each partition can have ...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture 33: MECH 2301 Lecture 33 Notes
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MECH 2301 Lecture 33 Notes Introduction Free Space Management Specifically to support large files and large disks, to provide file security, to reduce access times, and to provide recovery capability. NTFS operates on volu...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 28: Defragmentation, Linked List
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MECH 2301 Lecture 28 Notes Introduction Noncontiguous Storage Allocation The idea was to leave as much room for another file as possible, but studies showed that it didnt work any better than the others. Ultimately, it bec...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture 27: MECH 2301 Lecture 27 Notes
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MECH 2301 Lecture 27 Notes Introduction MultiBlock Readings The file manager can simply request a multiblock read and read the entire file in one pass. Relative file access is also straightforward: the correct block can be...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 29: Disk Partitioning
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MECH 2301 Lecture 29 Notes Introduction Linked allocation and the file allocation table method At first it would seem that the system could simply place link pointers to the next block at the end of every file block. Howev...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture Notes - Lecture 32: Indexed File, Ntfs, Inode
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MECH 2301 Lecture 32 Notes Introduction Windows NTFS file system As you will see the file management system maintains a directory structure that identifies and locates each file by name. Directory entries also store the at...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture 26: MECH 2301 Lecture 26 Notes
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MECH 2301 Lecture 26 Notes Introduction Contiguous Storage Allocation As you are already aware, disk files are stored in small, fixedsize blocks. This gives disks the important advantage that individual blocks can be read ...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture 30: MECH 2301 Lecture 30 Notes
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MECH 2301 Lecture 30 Notes Introduction FAT Table To locate a particular block in a particular file, the file manager goes to the directory entry and finds the starting block for the file. It then follows the links through...

Mechanical Engineering
MECH 2301
Hossam Sadek
MECH 2301 Lecture 31: MECH 2301 Lecture 31 Notes
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MECH 2301 Lecture 31 Notes Introduction Indexed Allocation The FAT technique appears to have reached the end of its useful life Because it is still offered sometimes as an option when formatting devices, it is useful to un...

Mechanical Engineering
MECH 2301
Hossam Sadek
Permachart - Marketing Reference Guide: Magnetic Circuit, Electrical Network, Angular Velocity

l e a r n • r e f e r e n c e • r e v i e w permacharts TM Electrical Engineering GLOSSARY OF TERMS ...

Electrical Engineering
4400:307
All Professors
Electricity & Magnetism - Reference Guides

This Guide is another one of the many products that effectively advances one’s knowledge of a distinct aspect of the physical sciences. The basic of the properties of electricity and electrical circuits are established in ...

Electrical Engineering
4400:307
All Professors
Permachart - Marketing Reference Guide: Semiconductor Device, Precision Rectifier, Envelope Detector

permacharts TM E le c t r o n ic sI Waveforms Diodes ...

Electrical Engineering
4400:307
All Professors
Permachart - Marketing Reference Guide: Schmitt Trigger, Square Wave, Negative Feedback

permacharts TM E le c t r o n ic sII Operational Amplifiers (OP AMPS) ...

Electrical Engineering
4400:307
All Professors

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