问题：
[单选题] 冯·诺依曼1946年提出了计算机的程序存储原理。下面关于这一原理的说法错误的是( )。
A、计算机内的程序由指令构成,程序和数据都用二进制数表示
B、程序由指令构成
C、计算机以中央处理器为中心
D、掌上计算机机器尺寸太小,无法存储程序,是由使用者用口语命令它工作的
参考答案：
D
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