... con số này
sẽ gửi cho CPU.
Chuong 5 : I/O Devices
Chuong 5 : I/O Devices
46
46
Hard
Hard
Disk
Disk
Chuong 5 : I/O Devices
Chuong 5 : I/O Devices
4
4
Làm sao CPU nhận biết một I/O
Mỗi ... I/O Devices
Chuong 5 : I/O Devices
45
45
Hard
Hard
Disk
Disk
Track
Track
Cylinder
Cylinder
Sector
Sector
Cluster
Cluster
Caùc thuaät
ngöõ
track
sector
Chuong 5 : I/O Devices
Chuong ... bò I/O và CPU được thực
hiện theo 2 bước :
hiện theo 2 bước :
Chuong 5 : I/O Devices
Chuong 5 : I/O Devices
25
25
Bảng vector Interrupt
Bảng vector Interrupt
Một vùng nhớ dài 1024 bytes...
... CTC.
Địa chỉ 00A7:107C
CS IP
Chuong 5 : I/O Devices
Chuong 5 : I/O Devices
46
46
Hard
Hard
Disk
Disk
Chuong 5 : I/O Devices
Chuong 5 : I/O Devices
40
40
Thí duï minh hoaï veà interrupt
Thí ... 5 : I/O Devices
Chuong 5 : I/O Devices
5
5
Sụ ủo giaỷi maừ ủũa chổ
Sụ ủo giaỷi maừ ủũa chổ
CPU
CPU
ROMCS
RAMCS
I/OCS
ADDRESS BUS
Caực bit thaỏp Address bus
Bit cao
Chuong 5 : I/O Devices
Chuong ... Time of Day
INT 1CH : User Time Interrupt
INT 21H : Dos Service
Chuong 5 : I/O Devices
Chuong 5 : I/O Devices
39
39
HOẠT ĐỘNG NGẮT QUÃNG CỦA I/O
HOẠT ĐỘNG NGẮT QUÃNG CỦA I/O
CPU yêu cầu...
... single directory, say, c:\test\:
• DoFactory.HeadFirst.Proxy.GumballState.Client.exe
• DoFactory.HeadFirst. Proxy.GumballState.Server.exe
• DoFactory.HeadFirst. Proxy.GumballState.Machine.dll ...
Implemented as DoFactory.HeadFirst.Combining.Decorator
Page 508: We need a factory to produce ducks!
Java program name: combining/factory
Implemented as DoFactory.HeadFirst.Combining.Factory ... singleton/classic
Implemented as DoFactory.HeadFirst.Singleton.Classic
Page 175: The Chocolate Factory
Java program name: singleton/chocolate
Implemented as DoFactory.HeadFirst.Singleton.Chocolate...
...
mdadm
NAME
mdadm - manage MD devices aka Linux Software Raid.
SYNOPSIS
mdadm [mode] <raiddevice> [options] <component-devices>
DESCRIPTION
RAID devices are virtual devices created from ...
survive some degree of device failure.
Linux Software RAID devices are implemented through the md (Multiple Devices) device driver.
Currently, Linux supports LINEAR md devices, RAID0 (striping), ... the array device and possibly a second device.
Each event has an associated array device (e.g. /dev/md1) and possibly a second device. For Fail, FailSpare, andSpareActive the second
device is...
... 5
#mdadm create /dev/md0 level=5 raid-devices=3 /dev/sda{5,6,7}
Formatting the raid device
#mke2fs -j /dev/md0
Creating mount point
#mkdir /raid5
Mounting the raid device to the created mount point
http://helpinlinux.blogspot.com/search/label/storage
How ... raid device. Here we use three partitions /dev/sda5
/dev/sda6 /dev/sda7. Keep in mind that, in real industry it'll be three different hard disks.
This following command will create a raid device ... create a Raid Device using madadm in linux rhel5
with level 5, 0 and 1
The following article explains what is Raid, what are important levels and how to install and
configure a raid device in a...
... windshield.
16
E70 Head- up Display
4
E70 Head- up Display
Head- up Display
Model: E70
Production: From Start of Production
After completion of this module you will be able to:
• Describe the operation of the Head- up ... page.
26
E70 Head- up Display
The separate components of the head- up display are the cover glass, mirrors, LED
power supply, LED array, TFT projection display, PCB and casing. The head- up display
can ... parts.
Note: The head- up display is fitted above the steering column, immediately
behind the instrument cluster. It is fastened to the bulkhead structure
with
three hexagon bolts.
13
E70 Head- up Display
System...
... this job.
SIMPLE FEEDING DEVICES
The oscillating sector picks
up the desired number of parts,
left diagram, and feeds them by
pivoting the required number of
degrees. The device for oscil-
lating ... and it is carried to the
required position by the action of a cam and
follower.
Feeding headed rivets. Headed rivets, cor-
rectly oriented, are supplied from a parts-
feeder in a given direction. ... relative movement of a
pair of slide shutters. Then the rivet falls
through a guide cylinder to a clamp. Clamp
pairs drop two rivets into corresponding holes.
Label feed. Labels are taken out of the
hopper...
... 2, to roll both gears into mesh.
After one circuit of the input (right diagram), tooth 1
is now ahead of tooth 2, the gears go out of mesh, and
the output gear stops (it is kept in position by ... reciprocating motion. Both
input and output shafts are in line with
each other. The right half of the device is a
three-dimensional reciprocator. Rotating
the input crank causes its link to oscil-
late. ... then con-
verts that oscillation into the desired in-
line output motion.
ROTARY-TO-RECIPROCATING DEVICES
Sclater Chapter 4 5/3/01 10:45 AM Page 114
Operating sequence. In operation, the
input wheel...
... Chapter 5 5/3/01 11:45 AM Page 138
134
TWELVE EXPANDING AND CONTRACTING DEVICES
Parallel bars, telescoping slides, and other devices
that can spark answers to many design problems.
Fig. 1
Figs. ... high to
satisfy the design requirements, and it is
undesirable to enlarge the cam size, cer-
tain devices can be installed to reduce the
pressure angles:
Sliding cam—This mechanism is
used on a ... Other
prior mechanisms relied on spring load-
ing, differential multiple-point drives and
other devices to reduce backlash. In pro-
viding three-point drive along a track
between the movable and...
... and
overload protection.
Differential clamp. This method of using a differential
screw to tighten clamp jaws combines rugged threads
with high clamping power. Clamping pressure,
P = Te [R(tan φ ... helical rather than linear.
Fig. 3 A two-directional lamp adjustment with screwdriver will move a lamp up and down.
A knob adjust (right) rotates the lamp about a pivot.
Fig. 4 A knife-edge bearing ... stiff-
ness of an air spring.
Clamp: A jaw is normally held open by a
metal spring. Actuation of the air spring
then closes the clamp. The amount of open-
ing in the jaws of the clamp can be up to
30°...
... while rotating.
Sclater Chapter 7 5/3/01 12:33 PM Page 207
217
EIGHT SNAP-ACTION DEVICES
Another selection of basic devices for obtaining
sudden motion after a gradual buildup of force.
Fig. 1 ... rotate.
Fig. 7 A geared cocking device has a ratchet fixed to a pinion. A torsion spring exerts
clockwise force on the spur gear; a tension spring holds the gar in mesh. The device is
wound by turning ... with dwell
periods.
Fig. 7 A double eccentric, actuated by a
suitable handle, provides powerful clamping
action for a machine-tool holding fixture.
Fig. 8 A mixing roller for paint, candy,
or food....
... on the principle shown in Fig. 3.
The crank disk imparts motion to the connecting rod. The crosshead
moves toggle levers which, in turn, give unidirectional motion to the
clutch wheel when the ... logarithmic spiral gears shown in
(A), are open-curved. They are usually compo-
nents in computing devices. The elliptically
shaped gears, shown in (B), are closed curved.
They are components in ... have opposing forces. The
only element that introduces friction (and
is subject to wear in the device) is the
leadscrew; the friction here provides a
holding force.
Theoretically there is no...
... clutch is quieter, but it requires a
spring device to keep the eccentric pawl in constant engagement. (C)
Balls or rollers replace the pawls in this device. Motion of the outer
race wedges the ... one direc-
tion only. The clutch serves as a counter-rotation hold-
ing device. An example is a clutch mounted on the
headshaft of a conveyor. The outer race is restrained
by torque-arming the ... of the knob is anodized alu-
minum, black or gray, and all other parts
are stainless steel. The device is designed
to meet the military requirements of
MIL-E-5400, class 3 and MILK-3926
specifications.
Applications...