若用256KX8bit的存储器芯片，构成地址40000000H到400FFFFFH,且按字节编址的内存区域，则需（）片芯片。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30130' and id < 2438247 and id<>'2438247' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30130' and id > 2438247 and id<>'2438247' order by id asc limit 5