免费智能真题库 > 历年试卷 > 嵌入式系统设计师 > 2017年下半年 嵌入式系统设计师 上午试卷 综合知识
  第71题      
  关键词:   OS        章/节:   计算机专业英语       

 
An operating system also has to be able to service peripheral (71), such as timers,motors, sensors, communication devices, disks, etc. All of those can request the attention of the OS (72) , i.e. at the time that they want to use the OS, the OS has to make sure it's ready to service the requests. Such a request for attention is called an interrupt. There are :wo kinds of interrupts: Hardware interrupts and Software interrupts. The result of an inteiTup: is also a triggering of the processor, so that it jumps to a (73) address. Examples of cases where software interrupts appear are perhaps a divide by zero, a memory segmentation fault, etc. So this kind of interrupt is not caused by a hardware event but by a specific machine language operation code. Many systems have more than one hardware interrupt line, and the hardware manufacturer typically assembles all these interrupt lines in an interrupt (74) . An Interrupt (75) is a piece of hardware that shields the OS from the electronic details of the interrupt lines, so that interrupts can be queued and none of them gets lost.
 
 
  A.  hardware
 
  B.  software
 
  C.  application
 
  D.  orocessor
 
 
 

 
  第75题    2020年下半年  
   68%
Fog computing is a mid-layer between cloud, data centers and IoT devices/sensors. It provides services of ( 71 ) along w..
  第74题    2019年下半年  
   65%
Edge computing is a (71) , open IT architecture that features decentralized processing power, enabling mobile computing ..
  第71题    2016年下半年  
   42%
A real-time operating system. (RTOS) is an operating system intended to serve (71) application process data as it comes ..
   题号导航      2017年下半年 嵌入式系统设计师 上午试卷 综合知识   本试卷我的完整做题情况  
1 /
2 /
3 /
4 /
5 /
6 /
7 /
8 /
9 /
10 /
11 /
12 /
13 /
14 /
15 /
 
16 /
17 /
18 /
19 /
20 /
21 /
22 /
23 /
24 /
25 /
26 /
27 /
28 /
29 /
30 /
 
31 /
32 /
33 /
34 /
35 /
36 /
37 /
38 /
39 /
40 /
41 /
42 /
43 /
44 /
45 /
 
46 /
47 /
48 /
49 /
50 /
51 /
52 /
53 /
54 /
55 /
56 /
57 /
58 /
59 /
60 /
 
61 /
62 /
63 /
64 /
65 /
66 /
67 /
68 /
69 /
70 /
71 /
72 /
73 /
74 /
75 /
 
第71题    在手机中做本题