WEBSecure Digital, officially abbreviated as SD, is a proprietary, non-volatile, flash memory card format the SD Association (SDA) developed for use in portable devices. The standard was introduced in August 1999 by SanDisk, Panasonic (Matsushita) and Toshiba as an improvement on MultiMediaCards (MMCs). [1] . SDs have become an industry standard.
GLOBAL RANK
Alexa Reach
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Alexa Rank Country N/A
Daily Unique Visitors
Monthly Unique Visitors
United States
4,553
Indonesia
3,561
Taiwan
1,158
United Kingdom
1,028
Brazil
930
Nigeria
813
Egypt
683
Hong Kong
645
Canada
645
Australia
562
Philippines
402
India
392
Malaysia
385
Spain
319
Germany
311
Mexico
298
France
281
Italy
260
Turkey
238
Iraq
217
Thailand
213
Netherlands
204
Israel
202
Cambodia
168
Algeria
130
Ireland
117
Romania
113
Jordan
104
Poland
100
Ghana
96
Argentina
92
South Africa
83
Belgium
74
Czechia
68
Ukraine
64
Japan
64
Morocco
62
South Korea
60
Lebanon
57
Saudi Arabia
55
Austria
53
Hungary
51
Sweden
49
Singapore
47
Pakistan
45
Bangladesh
43
Denmark
40
Greece
38
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Domain infomation | Domain Name: sd.gov.cn ROID: 20021209s10061s00006263-cn Domain Status: ok Registrant: 山东省人民政府办公厅 Registrant Contact Email: [email protected] Sponsoring Registrar: 北京国科云计算技术有限公司(原北京中科三方网络技术有限公司) Name Server: dns-jn.sd.cninfo.net Name Server: dns-qd.sd.cninfo.net Registration Time: 1998-01-24 00:00:00 Expiration Time: 2031-01-24 00:00:00 DNSSEC: unsigned |