第十章、新式算法(2 / 2)

汉魏文魁 赤军 0 字 2021-04-06

是勋闻言吓了一大跳,就觉得后背上直冒凉气,赶紧转过头来分辩:“非也,乃说他人家事。吾自有贤妻,可比无盐、孟光……”话出口就觉得不妙,无盐那可是著名的丑女啊…… </p>

不过好在这年月“无盐”似乎还并没有成为丑女的代名词,史书仅传其劝谏齐王,乃封为后事,“刻画无盐,唐突西施”云云,还得几十上百年后才得出现。嗯,其实是勋完全不必要那么紧张。这话曹淼压根儿就有听没有懂——她哪儿知道无盐、孟光都是WHO啊?! </p>

看到曹淼进来。关靖便即拱手施礼。口称“曹夫人”。曹淼也知道关士起在是勋心目中的地位,非普通门客可比也,赶紧还礼,问说宵夜准备好了,关先生要不要与夫婿共进呢?关靖笑一笑:“吾老矣,岂尚能饭?日进二餐足矣。”便即起身告辞。 </p>

曹淼也没有听懂关靖的话,还问是勋:“岂老者不能饭否?”是勋心说你当人人都跟你爹似的,都五十多了还每餐斗米。没有廉颇的本事,却有廉颇的饭量?也不作答,却问曹淼:“夜食何在?”你嘴里说宵夜好了,结果空着手进来是几个意思? </p>

曹淼说厨下这就会送过来,你别着急,随即从袖中取出一册来,递给是勋:“家中此月账务,夫君过目。” </p>

其实是府的财政分成两块,小头是管氏父女管着,大头归管家鱼他。但曹淼自从被是勋逼得多识了些字,读过几本书以后。就特意每月问鱼他索要账目来看,等她先核对过了再交给是勋——因为觉得只有这样才算尽了大妇之责,也才能体现大妇的权威。 </p>

这年月的记账方法比较简单,但正唯其简单,所以更显繁杂、混乱,就曹淼的天赋,一个人跟案上摆弄半天算筹,都未必能算清一笔账。是勋瞧着起急,干脆教给她阿拉伯数字和简单的算数公式——要说高级点儿的,就连是勋本人都早就还给前一世的数学老师了。 </p>

没想到曹淼学得挺快,完了就以此去要求鱼他。鱼他瞧见那些曲里拐弯的阿拉伯数字头都大了,先极口恭维主人这学自异域的计数法实在神妙,然后提醒曹淼,说主母既然不喜欢算筹,咱可以学珠算呀。 </p>

于是曹淼捧了一具珠算又来找是勋,是勋一瞧,这特么是虾米玩意儿?原来当时珠算初创,又叫算板,是在木板上刻出几条长槽来,内嵌活珠,但跟后世的算盘不同,槽分三段,上下两段各嵌一珠,中段则嵌五珠。是勋接过来试了试,实在不易拨动,因此干脆画了幅后世算盘的图形,命木工制成来用。 </p>

他前一世的小时候确实是学过珠算的,可是什么“一下五去四”、“三去七进一”的早就忘得精光溜溜啦,拿到新式算盘后拨拉来拨拉去,总是回想不起来。鱼他倒是瞧着这新式算盘挺方便,不但给请了去,还自作主张制zuò贩卖,但他从此算得了账以后,就必须先请人对照图谱,给改抄成阿拉伯数字,再呈给曹淼,曹淼以算数公式核对过后,再交给是勋。 </p>

是勋原本是不怎么查账的——瞧着眼晕——自从能够拿到阿拉伯数字的账本以后,倒是轻松了许多,于是每月必查。至于鱼他是否因此而暗中记恨曹淼,那就谁都猜不到啦。 </p>

其实是勋这套阿拉伯数字和算数公式,鱼他虽然望而却步,学成者却并非仅仅曹淼一人而已,还包括了诸葛孔明。想当年孔明于是勋门下研究抛石机,经常见着老师背过身去拿枝笔点点画画的,也不用算筹,也不用珠算,普通加减乘除还算得挺快,心知必有秘法。他是个勤奋好学的,便找个机会请教是勋,说我知道筹算非经学正道也,但日常也总能用得上,先生既有秘法,何不教我?您不是打算光把弟子教成个经学家吧? </p>

是勋说你别瞧我算得快,这玩意儿还真未必好学——“此西域所传阿……”一琢磨这年月还压根儿没有阿拉伯呢,若循其本源说是印度数字呢?印度终究距离不远,后世之人怕会指摘自己扯淡,干脆——“此大秦数字也,书法与中国字大为不同。”诸葛亮说没关系,弟子愿学。 </p>

于是是勋就教了给诸葛亮啦,谁想到诸葛孔明真高才也,一学就会——这年月篆书仍然小范围地流行,握毛笔写曲道还真难不住他——而且计算速度要超过是勋一倍,准确率同样超过一倍…… </p>

“真妙法也,有何难哉?”诸葛亮是无心之言,是勋却听得有点儿脸上发烧。 </p>

PS:本月最后一天了,月票再闲着也就废了,不如投给本书吧,谢谢!</p>

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