Chaps 36 file devices IO Devices

LPTv4 module 36 file integrity checking

LPTv4  module 36 file integrity checking
... Reproduction is Strictly Prohibited File Integrity File integrity checks: • Whether the file is same as the original file fil • For any modification in the file File integrity can be compromised due ... Strictly Prohibited Integrity Checking Techniques Comparing two files bit-by-bit: • It requires two copies of the same file (not used normally) CRC-based i CRC b d integrity checking: i h ki • ... Checking File Integrity EC-Council • Check while you unzip the file • Check for CRC value integrity checking • Check for hash value integrity checking g y g Copyright © by EC-Council All Rights Reserved...
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Interacting with the Outside World Using Simple IO Devices

Interacting with the Outside World Using Simple IO Devices
... 20 Interacting with the Outside World Using Simple I/O Devices show pieces, etc Many of the embedded system products makes use of the SMD LED’s (owing to manufacturing ease) although they are ... 22 Interacting with the Outside World Using Simple I/O Devices Program 2.3 LED ON-OFF by using shift operators This application is one step towards “scrolling marquee LED signs” Such applications ... ****************************************************************************** 32 Interacting with the Outside World Using Simple I/O Devices 2.6 Seven Segment Display Interfacing The seven segment display are still been used in Embedded Applications (where the users...
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Chapter-10-File systems and devices

Chapter-10-File systems and devices
... file systems across a network We’ll look at it in Chapter 25 • FreeBSD supports a number of file systems from other popular operating systems You mount the file systems with the mount command and ... Traditional UNIX systems distinguish two types of device, block devices and character devices FreeBSD no longer has block devices; we discussed the reasons for this on page 35 In traditional UNIX systems, ... of file system Local file systems on hard disk are always ufs, and file systems on CD-ROM are cd9660 Remote file systems are always nfs Specify swap partitions with swap, and the proc file system...
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Manage MD devices aka Linux Software Raid

Manage MD devices aka Linux Software Raid
... ftp://ftp.kernel.org/pub /linux/ kernel/people/mingo /raid- patches or http://www.cse.unsw.edu.au/~neilb/patches /linux- stable/ mdadm.conf(5), md( 4) raidtab(5), raid0 run(8), raidstop(8), mkraid(8) ... minutes mdadm create /dev /md0 level=1 raid -devices= 2 /dev/hd[ac]1 Create /dev /md0 as a RAID1 array consisting of /dev/hda1 and /dev/hdc1 echo 'DEVICE /dev/hd*[0-9] /dev/sd*[0-9]' > mdadm.conf mdadm ... Usage: mdadm assemble md- device options-and-component -devices Usage: mdadm assemble scan md- devices- and-options Usage: mdadm assemble scan options This usage assembles one or more raid...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 3

Mechanisms and Mechanical Devices Sourcebook - Chapter 3
... feed mechanisms Sclater Chapter 5 /3/ 01 10:20 AM Page 63 63 Sclater Chapter 64 5 /3/ 01 10:20 AM Page 64 Sclater Chapter 5 /3/ 01 10:20 AM Page 65 SEVEN LINKAGES FOR TRANSPORT MECHANISMS Transport mechanisms ... relative positions 72 Sclater Chapter 5 /3/ 01 10:20 AM Page 73 TRAVERSING MECHANISMS FOR WINDING MACHINES The seven mechanisms shown are parts of different yarn- and coil-winding machines Their fundamentals, ... containers The unit’s cut -and- stacked label capacity is 4,500 An electric eye is provided for cutting labels in web-roll form 75 Sclater Chapter 5 /3/ 01 10:21 AM Page 76 HIGH-SPEED MACHINES FOR ADHESIVE...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 4

Mechanisms and Mechanical Devices Sourcebook - Chapter 4
... mesh with every lobe on gear 4, and T3/T4 = L3/L4 = 2/3, where T3 and T4 are the numbers of teeth on gears and T1 and T2 will denote the numbers of teeth on gears and 98 and S = ∆θ 3/θ30 Hence θ30(1 ... bottom of a tooth well and is in a position to prevent counter-rotation Sclater Chapter 5/3/01 10 :44 AM Page 97 ODD SHAPES IN PLANETARY GIVE SMOOTH STOP AND GO This intermittent-motion mechanism ... = r4 and r2 = r3, there is no “differential motion” and the output remains stationary Thus if one gear pair, say and 4, is made partly circular and partly noncircular, then where r2 = r3 and...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 5

Mechanisms and Mechanical Devices Sourcebook - Chapter 5
... predict the existence of such mechanisms as the Bennett R-R-R-R mechanism, the double-ball joint R-S-S-R mechanism, and the R-CC-R mechanism (Fig 2) These “special” mechanisms require special geometric ... path Sclater Chapter 5/ 3/01 11: 45 AM Page 133 133 Sclater Chapter 5/ 3/01 11: 45 AM Page 134 TWELVE EXPANDING AND CONTRACTING DEVICES Parallel bars, telescoping slides, and other devices that can ... curve and a fast advance and slow return in the output link The stroke is varied by rotating the pivot to another position 155 Sclater Chapter 5/ 3/01 11:46 AM Page 156 ADJUSTABLE-OUTPUT MECHANISMS...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 6

Mechanisms and Mechanical Devices Sourcebook - Chapter 6
... Reciprocating linear force link: It reciprocates with one-, two-, or three-convolution air springs in a back-to-back arrangement Two- and three-convolution springs might need guides for their force ... Bearing adjustment This screw arrangement is a handy way for providing bearing adjustment and overload protection Rapid and slow feed With left- and right-hand threads, slide motion with the nut locked ... LB 195 Sclater Chapter 5/3/01 12:25 PM Page 1 96 FOURTEEN ADJUSTING DEVICES Here is a selection of some basic devices that provide and hold mechanical adjustment Fig A spring-loaded pin supplies...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 7

Mechanisms and Mechanical Devices Sourcebook - Chapter 7
... circular arc 1-2 with center at 02, arc 34 with center at 03 , arc 4-5 with center at 01 , arc 5-6 with center at 04 , arc 7- 1 with center at 01 , and the straight lines 2-3 and 6 -7 The method ... links II and III come into toggle Sclater Chapter 5/3/01 12:33 PM Page 213 SIXTEEN LATCH, TOGGLE, AND TRIGGER DEVICES Diagrams of basic latching and quick-release mechanisms Fig Cam-guided latch ... turned with radii r1 , r3 , and r4 One such piece is shown in Fig The templates have hubs that fit into the drilled holes at 01 , 03 , and 04 Next the arcs 7- 1 , 3-4 , and 5-6 are filed with the hardened...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 8

Mechanisms and Mechanical Devices Sourcebook - Chapter 8
... Sclater Chapter 5/3/01 12:42 PM Page 2 48 RING DRIVES Ring -and- pulley drive (Fig 9) A thick steel ring in this drive encircles two variable-pitch (actually variable-width) pulleys A novel gear -and- linkage ... motor comparable in size and power to those used in standard reel-to-reel recorders, and a large bi-peripheral flywheel and sturdy capstan that reduces wow and flutter and drives the tape A patent ... Sclater Chapter 5/3/01 12:43 PM Page 2 58 VARIABLE-SPEED DRIVES AND TRANSMISSIONS These ratchet and inertial drives provide variable-speed driving of heavy and light loads Fig This variable-speed...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 9

Mechanisms and Mechanical Devices Sourcebook - Chapter 9
... requirements of MIL-E-5400, class and MILK- 392 6 specifications Applications were seen in counter and reset switches and controls for machines and machine tools, radar systems, and precision potentiometers ... springs until they reach the “clutch-in” speed Fig Cam and Roller Clutch: This over-running clutch is better suited for higher-speed free-wheeling than a pawl -and- ratchet clutch The inner driving ... bi-directional slip and independent torque capacities for the two directions of rotation It requires two springs, one right-handed and one left-handed, for coupling the input, intermediate and...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 10

Mechanisms and Mechanical Devices Sourcebook - Chapter 10
... light and second to light a red bulb and also sound an alarm bell Over-the-side or over-the-rear loading requires a different setting of the Bourdon pressure-gage unit than does over-the-front ... differentials and fluid velocities for their actuation Fig Auxiliary piston governor Fig Hit -and- miss governor 362 Fig Force-compensated regulator Sclater Chapter 10 5/3/01 1:08 PM Page 363 Fig Pressure-actuated ... these, such as cams, rollers, push-rods, and traveling nuts, are described and illustrated 358 Sclater Chapter 10 5/3/01 1:08 PM Page 359 359 Sclater Chapter 10 5/3/01 1:08 PM Page 360 Limit Switches...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 11

Mechanisms and Mechanical Devices Sourcebook - Chapter 11
... to a minimum This heavy-duty gear pump can be used at pressures up to 1,000 psi These pumps were made with either single- or double-end shafts and can be foot- or flange-mounted The drive shaft ... be driven clockwise or counter-clockwise The tube is completely encased and cannot expand beyond its original diameter The standard pump is made of bronze and will handle volumes to 15 gpm The ... 1,200 rpm by an electric motor and 1,300 rpm by a steam turbine 373 Sclater Chapter 11 5/3/01 1:15 PM Page 374 ROTARY-PUMP MECHANISMS Fig (A) A Ramelli pump with spring-loaded vanes to ensure contact...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 13

Mechanisms and Mechanical Devices Sourcebook - Chapter 13
... here 447 Sclater Chapter 13 5/3/01 1:32 PM Page 448 DESIGN CURVES AND EQUATIONS FOR GEAR-SLIDER MECHANISMS What is a gear-slider mechanism? It is little more than a crank -and- slider with two ... resulting four-bar linkage will coordinate angular motions φ12 and 13 with ψ12 and 13 The procedure is: Fig Four-bar linkage synchronizes two angular movements, φ12 and 13, with ψ12, and ψ14 Obtain ... this knee-joint tester designed and built by following the design and calculating procedures outlined in this article 445 Sclater Chapter 13 5/3/01 1:32 PM Page 446 Designing Crank -and- Rocker...
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Mechanisms and Mechanical Devices Sourcebook - Chapter 14

Mechanisms and Mechanical Devices Sourcebook - Chapter 14
... system provides full three-axis inertial measurement, and does not require the manual assembly and alignment of sense axes A combined X- and Y-axis rate gyro and a Z-axis rate gyro was also designed ... elements and icons, and 2D drafting and detailing capability, which support design collaboration and compatibility among CAD, CAM, and computer-aided engineering (CAE) applications Designers and engineers ... more, and they also pass more easily through the mask This permitted the Wisconsin team to use thicker and stronger materials to make 4-in.-square masks rather than the standard 1- × 6-cm masks...
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